Resolve conflicts in v3->v2.22.12 merge

CHANGELOG.md

@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 Note that the only difference between `v2` and `v3` of the CodeQL Action is the node version they support, with `v3` running on node 20 while we continue to release `v2` to support running on node 16. For example `3.22.11` was the first `v3` release and is functionally identical to `2.22.11`. This approach ensures an easy way to track exactly which features are included in different versions, indicated by the minor and patch version numbers.
 
-## 3.22.12 - 22 Dec 2023
+## 2.22.12 - 22 Dec 2023
 
 - Update default CodeQL bundle version to 2.15.5. [#2047](https://github.com/github/codeql-action/pull/2047)
 

CONTRIBUTING.md

@@ -114,11 +114,7 @@ To deprecate an older version of the Action:
    - Implement an Actions warning for customers using the deprecated version.
 1. Wait for the deprecation period to pass.
 1. Upgrade the Actions warning for customers using the deprecated version to a non-fatal error, and mention that this version of the Action is no longer supported.
-<<<<<<< HEAD
-1. Make a PR to bump the `OLDEST_SUPPORTED_MAJOR_VERSION` in [release-branches.py](.github/actions/release-branches/release-branches.py).  Once this PR is merged, the release process will no longer backport changes to the deprecated release version.
-=======
 1. Make a PR to bump the `OLDEST_SUPPORTED_MAJOR_VERSION` in [releases.ini](.github/releases.ini).  Once this PR is merged, the release process will no longer backport changes to the deprecated release version.
->>>>>>> origin/releases/v3
 
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