Update publish.yml.

.github/workflows/publish.yml

@@ -1,12 +1,17 @@
 name: brew pr-pull
+
 on:
   pull_request_target:
     types:
       - labeled
+
 jobs:
   pr-pull:
     if: contains(github.event.pull_request.labels.*.name, 'pr-pull')
     runs-on: ubuntu-22.04
+    permissions:
+      contents: write
+      pull-requests: write
     steps:
       - name: Set up Homebrew
         uses: Homebrew/actions/setup-homebrew@master
@@ -17,10 +22,8 @@ jobs:
       - name: Pull bottles
         env:
           HOMEBREW_GITHUB_API_TOKEN: ${{ github.token }}
-          HOMEBREW_GITHUB_PACKAGES_TOKEN: ${{ github.token }}
-          HOMEBREW_GITHUB_PACKAGES_USER: ${{ github.actor }}
           PULL_REQUEST: ${{ github.event.pull_request.number }}
-        run: brew pr-pull --debug --tap=$GITHUB_REPOSITORY $PULL_REQUEST
+        run: brew pr-pull --debug --tap="$GITHUB_REPOSITORY" "$PULL_REQUEST"
 
       - name: Push commits
         uses: Homebrew/actions/git-try-push@master
@@ -32,4 +35,4 @@ jobs:
         if: github.event.pull_request.head.repo.fork == false
         env:
           BRANCH: ${{ github.event.pull_request.head.ref }}
-        run: git push --delete origin $BRANCH
+        run: git push --delete origin "$BRANCH"