chore: bump sha2 from 0.9.6 to 0.9.8 (#19760)

* chore: bump sha2 from 0.9.6 to 0.9.8

Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.9.6 to 0.9.8.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](https://github.com/RustCrypto/hashes/compare/sha2-v0.9.6...sha2-v0.9.8)

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

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

* [auto-commit] Update all Cargo lock files

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot-buildkite <dependabot-buildkite@noreply.solana.com>

sdk/Cargo.toml

@@ -70,7 +70,7 @@ serde = "1.0.130"
 serde_bytes = "0.11"
 serde_derive = "1.0.103"
 serde_json = { version = "1.0.67", optional = true }
-sha2 = "0.9.6"
+sha2 = "0.9.8"
 sha3 = { version = "0.9.1", optional = true }
 solana-crate-features = { path = "../crate-features", version = "=1.8.0", optional = true }
 solana-logger = { path = "../logger", version = "=1.8.0", optional = true }