Add reminder to manually update the SHA in CLI test

Author: angelapwen

.github/setup-swift/action.yml

@@ -26,7 +26,7 @@ runs:
           VERSION="5.7.0"
         fi
         echo "version=$VERSION" | tee -a $GITHUB_OUTPUT
-    - uses: swift-actions/setup-swift@da0e3e04b5e3e15dbc3861bd835ad9f0afe56296
+    - uses: swift-actions/setup-swift@da0e3e04b5e3e15dbc3861bd835ad9f0afe56296 # Please update the corresponding SHA in the CLI's CodeQL Action Integration Test.
       if: "(runner.os != 'Windows') && (matrix.version == 'cached' || matrix.version == 'latest' || matrix.version == 'nightly-latest')"
       with:
         swift-version: "${{steps.get_swift_version.outputs.version}}"