chore(deps): update protobuf monorepo to v30.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
com_google_protobuf	http_archive	minor	v30.0 -> v30.1
protobuf	bazel_dep	minor	30.0 -> 30.1

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Release Notes

protocolbuffers/protobuf (com_google_protobuf)

v30.1: Protocol Buffers v30.1

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Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Bazel

• Loosen py_proto_library check to be on the import path instead of full directory (i.e. excluding external/module-name prefix). (#​20569) (protocolbuffers/protobuf@3576a1f)

Compiler

• Fix python codegen crash when C++ features are used. (#​20577) (protocolbuffers/protobuf@250c550)

C++

• Fix python codegen crash when C++ features are used. (#​20577) (protocolbuffers/protobuf@250c550)

Java

• Remove Java runtime classes from kotlin release. (#​20607) (protocolbuffers/protobuf@4747628)

Kotlin

• Remove Java runtime classes from kotlin release. (#​20607) (protocolbuffers/protobuf@4747628)

Python

• Fix python codegen crash when C++ features are used. (#​20577) (protocolbuffers/protobuf@250c550)

Other

• Re-add system_python repo alias to MODULE.bazel (#​20662) (protocolbuffers/protobuf@ebb5224)

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