Bump sha2 from 0.10.8 to 0.10.9 (#62)

Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.10.8 to 0.10.9.
- [Commits](RustCrypto/hashes@sha2-v0.10.8...sha2-v0.10.9)

---
updated-dependencies:
- dependency-name: sha2
  dependency-version: 0.10.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]