Bump futures from 0.3.30 to 0.3.31 in /packages/sql/ffi

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.30 to 0.3.31.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.30...0.3.31)

---
updated-dependencies:
- dependency-name: futures
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]