Update sha2 requirement from 0.9.5 to 0.10.8

Updates the requirements on [sha2](https://github.com/RustCrypto/hashes) to permit the latest version.
- [Commits](https://github.com/RustCrypto/hashes/commits/sha2-v0.10.8)

---
updated-dependencies:
- dependency-name: sha2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.toml

@@ -11,7 +11,7 @@ keywords = ["Nitro", "Enclaves", "AWS"]
 rust-version = "1.58"
 
 [dependencies]
-sha2 = "0.9.5"
+sha2 = "0.10.8"
 serde = { version = ">=1.0", features = ["derive"] }
 serde_json = "1.0"
 num-traits = "0.2"