avro

Bump zerocopy from 0.7.30 to 0.7.31 in /lang/rust (#2635)

Bumps [zerocopy](https://github.com/google/zerocopy) from 0.7.30 to 0.7.31.
- [Release notes](https://github.com/google/zerocopy/releases)
- [Changelog](https://github.com/google/zerocopy/blob/main/CHANGELOG.md)
- [Commits](https://github.com/google/zerocopy/compare/v0.7.30...v0.7.31)

---
updated-dependencies:
- dependency-name: zerocopy
  dependency-type: indirect
...

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