Update approve-merge.yml

Updates secret to use GH_MERGE_TOKEN.

Author: willum070

.github/workflows/approve-merge.yml

@@ -34,16 +34,16 @@ jobs:
         uses: actions/checkout@v3
         with:
           ref: ${{ github.event.pull_request.head.sha }} # Checkout the PR's head commit
-          token: ${{ secrets.GH_TOKEN_RELEASE }}
+          token: ${{ secrets.GH_MERGE_TOKEN }}
 
       - name: Approve PR
         run: gh pr review --approve "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}
-          GH_TOKEN: ${{ secrets.GH_TOKEN_RELEASE }}
+          GH_TOKEN: ${{ secrets.GH_MERGE_TOKEN }}
 
       - name: Merge PR
         run: gh pr merge --auto --squash --delete-branch "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}
-          GH_TOKEN: ${{ secrets.GH_TOKEN_RELEASE }}
+          GH_TOKEN: ${{ secrets.GH_MERGE_TOKEN }}