avro

Bump sha2 from 0.10.7 to 0.10.8 in /lang/rust (#2527)

Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.10.7 to 0.10.8.
- [Commits](https://github.com/RustCrypto/hashes/compare/sha2-v0.10.7...sha2-v0.10.8)

---
updated-dependencies:
- dependency-name: sha2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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