message: build(bazel): fix a bug where the opensearch url coudln't be substituted
  The file was write protected in the bazel output tree.
diff: @@ -15,6 +15,10 @@ readonly deployedUrl=https://pr${prNumber}-${prLastSha:0:7}.ngbuilds.io/
  # Build and store the app
  yarn build
  + # Remove write protection from the opensearch.xml in the Bazel
  + # output tree so that the url can be substituted.
  + chmod u+w ../dist/bin/aio/build/assets/opensearch.xml
  +
  # Set deployedUrl as parameter in the opensearch description
  # deployedUrl must end with /
  yarn set-opensearch-url $deployedUrl
  