Revert "#39 fix: set PAT to ensure permission for bot"

This reverts commit 8c63032.

.github/workflows/php-docker-public.yml

@@ -91,10 +91,8 @@ jobs:
 
       - name: Set new version tag
         run: |
-          git config user.name "GitHub Actions"
-          git config user.email "[email protected]"
           git tag ${{ steps.inc_version.outputs.new_version }}
-          git push https://x-access-token:${{ secrets.GH_TOKEN }}@github.com/cslant/blog-docker.git ${{ steps.inc_version.outputs.new_version }}
+          git push origin ${{ steps.inc_version.outputs.new_version }}
 
       - name: Build and push Docker image
         id: build-and-push