chore: bump serde_yaml from 0.8.20 to 0.8.21 (#19820)

* chore: bump serde_yaml from 0.8.20 to 0.8.21

Bumps [serde_yaml](https://github.com/dtolnay/serde-yaml) from 0.8.20 to 0.8.21.
- [Release notes](https://github.com/dtolnay/serde-yaml/releases)
- [Commits](https://github.com/dtolnay/serde-yaml/compare/0.8.20...0.8.21)

---
updated-dependencies:
- dependency-name: serde_yaml
  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>

ledger-tool/Cargo.toml

@@ -20,7 +20,7 @@ log = { version = "0.4.14" }
 regex = "1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.67"
-serde_yaml = "0.8.20"
+serde_yaml = "0.8.21"
 solana-clap-utils = { path = "../clap-utils", version = "=1.8.0" }
 solana-cli-output = { path = "../cli-output", version = "=1.8.0" }
 solana-core = { path = "../core", version = "=1.8.0" }