Fix merge step

Author: hsubox76

.github/workflows/release-staging.yml

@@ -6,6 +6,9 @@ jobs:
   deploy:
     name: Staging Release
     runs-on: ubuntu-latest
+    # Allow GITHUB_TOKEN to have write permissions
+    permissions:
+      contents: write
 
     steps:
     - name: Set up Node (14)
@@ -17,7 +20,7 @@ jobs:
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         script: |
-          github.repos.merge({
+          github.rest.repos.merge({
             owner: context.repo.owner,
             repo: context.repo.repo,
             base: 'release',