Update pyo3 requirement from 0.26 to 0.27

[weiji14]

Updates the requirements on pyo3 to permit the latest version.

• Release notes
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Xref https://pyo3.rs/v0.27.0/migration.html#from-026-to-027. Change method from extract_bound to extract

Fixes these warnings:

Details

$ cargo test --all-features
   Compiling dlpark v0.6.0 (/home/user/projects/dlpark)
error[E0407]: method `extract_bound` is not a member of trait `FromPyObject`
  --> src/convertor/python.rs:69:5
   |
69 | /     fn extract_bound(ob: &pyo3::Bound<'py, pyo3::PyAny>) -> pyo3::PyResult<Self> {
70 | |         let ptr = capsule_to_raw_dlpack(ob.as_ptr(), DLTENSOR, USED_DLTENSOR);
71 | |         unsafe { Ok(SafeManagedTensor::from_raw(ptr as *mut _)) }
72 | |     }
   | |_____^ not a member of trait `FromPyObject`

error[E0407]: method `extract_bound` is not a member of trait `FromPyObject`
  --> src/convertor/python.rs:90:5
   |
90 | /     fn extract_bound(ob: &pyo3::Bound<'py, pyo3::PyAny>) -> pyo3::PyResult<Self> {
91 | |         let ptr = capsule_to_raw_dlpack(ob.as_ptr(), DLTENSOR_VERSIONED, USED_DLTENSOR_VERSIONED);
92 | |         unsafe { Ok(SafeManagedTensorVersioned::from_raw(ptr as *mut _)) }
93 | |     }
   | |_____^ not a member of trait `FromPyObject`

error[E0107]: trait takes 2 lifetime arguments but 1 lifetime argument was supplied
   --> src/convertor/python.rs:68:11
    |
 68 | impl<'py> FromPyObject<'py> for SafeManagedTensor {
    |           ^^^^^^^^^^^^ --- supplied 1 lifetime argument
    |           |
    |           expected 2 lifetime arguments
    |
note: trait defined here, with 2 lifetime parameters: `'a`, `'py`
   --> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/pyo3-0.27.1/src/conversion.rs:376:11
    |
376 | pub trait FromPyObject<'a, 'py>: Sized {
    |           ^^^^^^^^^^^^ --  ---
help: add missing lifetime argument
    |
 68 | impl<'py> FromPyObject<'py, 'py> for SafeManagedTensor {
    |                           +++++

error[E0107]: trait takes 2 lifetime arguments but 1 lifetime argument was supplied
   --> src/convertor/python.rs:89:11
    |
 89 | impl<'py> FromPyObject<'py> for SafeManagedTensorVersioned {
    |           ^^^^^^^^^^^^ --- supplied 1 lifetime argument
    |           |
    |           expected 2 lifetime arguments
    |
note: trait defined here, with 2 lifetime parameters: `'a`, `'py`
   --> /home/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/pyo3-0.27.1/src/conversion.rs:376:11
    |
376 | pub trait FromPyObject<'a, 'py>: Sized {
    |           ^^^^^^^^^^^^ --  ---
help: add missing lifetime argument
    |
 89 | impl<'py> FromPyObject<'py, 'py> for SafeManagedTensorVersioned {
    |                           +++++

Some errors have detailed explanations: E0107, E0407.
For more information about an error, try `rustc --explain E0107`.
error: could not compile `dlpark` (lib) due to 4 previous errors
warning: build failed, waiting for other jobs to finish...
error[E0599]: no function or associated item named `extract_bound` found for struct `legacy::safe_managed_tensor::SafeManagedTensor` in the current scope
   --> src/convertor/python.rs:128:42
    |
128 |             let mt2 = SafeManagedTensor::extract_bound(&capsule).expect("fail to extract bound");
    |                                          ^^^^^^^^^^^^^ function or associated item not found in `legacy::safe_managed_tensor::SafeManagedTensor`
    |
   ::: src/legacy/safe_managed_tensor.rs:11:1
    |
 11 | pub struct SafeManagedTensor(ffi::Dlpack);
    | ---------------------------- function or associated item `extract_bound` not found for this struct
    |
note: if you're trying to build a new `legacy::safe_managed_tensor::SafeManagedTensor` consider using one of the following associated functions:
      legacy::safe_managed_tensor::SafeManagedTensor::new
      legacy::safe_managed_tensor::SafeManagedTensor::from_raw
      legacy::safe_managed_tensor::SafeManagedTensor::from_non_null
   --> src/legacy/safe_managed_tensor.rs:35:5
    |
 35 | /     pub fn new<T, L>(t: T) -> std::result::Result<Self, T::Error>
 36 | |     where
 37 | |         T: TensorLike<L>,
 38 | |         L: MemoryLayout,
    | |________________________^
...
 51 |       pub unsafe fn from_raw(ptr: *mut ffi::ManagedTensor) -> Self {
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
 60 |       pub unsafe fn from_non_null(ptr: ffi::Dlpack) -> Self {
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0599]: no function or associated item named `extract_bound` found for struct `versioned::safe_managed_tensor::SafeManagedTensorVersioned` in the current scope
   --> src/convertor/python.rs:142:45
    |
142 |                 SafeManagedTensorVersioned::extract_bound(&capsule).expect("fail to extract bound");
    |                                             ^^^^^^^^^^^^^ function or associated item not found in `versioned::safe_managed_tensor::SafeManagedTensorVersioned`
    |
   ::: src/versioned/safe_managed_tensor.rs:13:1
    |
 13 | pub struct SafeManagedTensorVersioned(ffi::DlpackVersioned);
    | ------------------------------------- function or associated item `extract_bound` not found for this struct
    |
note: if you're trying to build a new `versioned::safe_managed_tensor::SafeManagedTensorVersioned` consider using one of the following associated functions:
      versioned::safe_managed_tensor::SafeManagedTensorVersioned::new
      versioned::safe_managed_tensor::SafeManagedTensorVersioned::with_flags
      versioned::safe_managed_tensor::SafeManagedTensorVersioned::from_raw
      versioned::safe_managed_tensor::SafeManagedTensorVersioned::from_non_null
   --> src/versioned/safe_managed_tensor.rs:35:5
    |
 35 | /     pub fn new<T, L>(t: T) -> std::result::Result<Self, T::Error>
 36 | |     where
 37 | |         T: TensorLike<L>,
 38 | |         L: MemoryLayout,
    | |________________________^
...
 51 | /     pub fn with_flags<T, L>(t: T, flags: Flags) -> std::result::Result<Self, T::Error>
 52 | |     where
 53 | |         T: TensorLike<L>,
 54 | |         L: MemoryLayout,
    | |________________________^
...
 67 |       pub unsafe fn from_raw(ptr: *mut ffi::ManagedTensorVersioned) -> Self {
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
 77 |       pub unsafe fn from_non_null(ptr: ffi::DlpackVersioned) -> Self {
    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Some errors have detailed explanations: E0107, E0407, E0599.
error: could not compile `dlpark` (lib test) due to 6 previous errors

[SunDoge]

LGTM