fix: Set checkout GHA persist-credentials to false for push to succeed (#884)

* Update github-push-action to v0.6.0
* Use 'persist-credentials: false' to allow github-push-action to push to master with a personal access token
   - ad-m/github-push-action#44
   - ad-m/github-push-action#46

Author: matthewfeickert

.github/workflows/tag.yml

@@ -45,6 +45,7 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v2.2.0
       with:
+        persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
         fetch-depth: 0
     - name: Set up git user
       run: |
@@ -100,7 +101,7 @@ jobs:
     - name: Push changes
       if: >-
         github.event.action == 'closed' && github.event.pull_request.merged
-      uses: ad-m/github-push-action@v0.5.0
+      uses: ad-m/github-push-action@v0.6.0
       with:
         github_token: ${{ secrets.GITHUB_PAT }}
     - name: Comment that something failed