build(deps): bump rustls from 0.23.20 to 0.23.21

Bumps [rustls](https://github.com/rustls/rustls) from 0.23.20 to 0.23.21.
- [Release notes](https://github.com/rustls/rustls/releases)
- [Changelog](https://github.com/rustls/rustls/blob/main/CHANGELOG.md)
- [Commits](rustls/rustls@v/0.23.20...v/0.23.21)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -242,7 +242,7 @@ features = ["http2", "rustls-tls-manual-roots", "charset", "json", "socks"]
 
 # TLS stack
 [workspace.dependencies.rustls]
-version = "0.23.20"
+version = "0.23.21"
 
 # Use platform-specific verifier for TLS
 [workspace.dependencies.rustls-platform-verifier]