message: Change IMG_MODIFIER suffix for the GHA workflow
  This commit changes the IMG_MODIFIER env var in the "kubeapps general workflow" in github actions,
  so it uses an image modifier different from the one used by the CircleCI pipeline.
diff: @@ -42,7 +42,7 @@ env:
  # as an output of the `setup` job.
  IMG_DEV_TAG: "build-${{ github.sha }}"
  # Apart from using a dev tag we use a different image ID to avoid polluting the tag history of the production tag
  - IMG_MODIFIER: "-ci"
  + IMG_MODIFIER: "-ci-gha"
  IMG_PREFIX: "kubeapps/"
  # We use IMG_PREFIX_FOR_FORKS for development purposes, it's used when the workflow is run from a fork of the kubeapps repo
  IMG_PREFIX_FOR_FORKS: "beni0888/"
  