update checkout version

Author: nitins17

.github/workflows/build_artifacts.yml

@@ -88,7 +88,7 @@ jobs:
     name: Build ${{ inputs.artifact }} (${{ inputs.runner }}, Python ${{ inputs.python }}, Clone main XLA=${{ inputs.clone_main_xla }})
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
       - name: Enable RBE if building on Linux x86 or Windows x86
         if: contains(inputs.runner, 'linux-x86') || contains(inputs.runner, 'windows-x86')
         run: echo "JAXCI_BUILD_ARTIFACT_WITH_RBE=1" >> $GITHUB_ENV