Update changelog for v2.1.10

Author: github-actions[bot]

CHANGELOG.md

@@ -1,6 +1,6 @@
 # CodeQL Action Changelog
 
-## [UNRELEASED]
+## 2.1.10 - 10 May 2022
 
 - Update default CodeQL bundle version to 2.9.5. [#1056](https://github.com/github/codeql-action/pull/1056)
 - When `wait-for-processing` is enabled, the workflow will now fail if there were any errors that occurred during processing of the analysis results.