Merge pull request #4146 from github/henrymercer/per-language-bundles-pr

Use per-language CodeQL bundles

Author: mbg

.github/workflows/__bundle-toolcache.yml

@@ -75,7 +75,8 @@ jobs:
       uses: ./../action/.github/actions/check-codescanning-config
       with:
         expected-config-file-contents: "{}"
-        languages: javascript
+        # Request multiple languages so later checks can reuse the combined bundle.
+        languages: javascript,python
         tools: ${{ steps.prepare-test.outputs.tools-url }}
 
     - name: Packs from input