Moved to ruby/actions workflow [ci skip]

.github/workflows/bundled_gems.yml

@@ -1,20 +0,0 @@
-name: "Update bundled_gems"
-
-on:
-  schedule:
-    - cron: '10 8 * * *'
-
-jobs:
-  Update-bundled_gems:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
-    - name: Update
-      run: |
-        ruby -rrubygems tool/update-bundled_gems.rb gems/bundled_gems |
-        tool/ifchange gems/bundled_gems -
-        git diff --no-ext-diff --ignore-submodules --exit-code