Create a new tag and release when a merge is made to 'powerhrg' branch

This will enable us to use Renovate to make sure the gem is always at the latest version, and only release on merges to 'powerhrg' branch

.github/workflows/build-gem.yml

@@ -5,10 +5,6 @@ on:
     branches: [ "powerhrg" ]
     paths:
       - "lib/krane/version.rb"
-  pull_request:
-    branches: [ "powerhrg" ]
-    paths:
-      - "lib/krane/version.rb"
 
 jobs:
   build:
@@ -30,16 +26,20 @@ jobs:
         VERSION=$(ruby -r './lib/krane/version.rb' -e "puts Krane::VERSION")
         echo "VERSION=$VERSION" >> $GITHUB_ENV
 
+    - name: Create a new tag
+      run: |
+        git config user.name "github-actions"
+        git config user.email "[email protected]"
+        git tag ${{ env.VERSION }}
+        git push origin ${{ env.VERSION }}
+
     - name: Build the gem
       run: gem build krane.gemspec
 
     - name: Get gem file name
       id: get_gem_name
       run: echo "GEM_FILE=$(ls krane-*.gem)" >> $GITHUB_ENV
 
-    - name: List files for debugging
-      run: ls -la
-
     - name: Create GitHub Release
       id: create_release
       uses: actions/create-release@v1