add Github actions linter to Github actions (#2521)

* add actions linter

* fix actions/checkout args

* trigger actions lint on both yml/yaml

...and other possible changes in workflow

.github/workflows/javascript-formatting.yml

@@ -61,7 +61,6 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           fetch-depth: 0
-          pull: --rebase --autostash
 
       - name: Install Dependencies
         run: npm install