make branch unique per workflow run

.github/workflows/resume.yml

@@ -76,19 +76,18 @@ jobs:
           cd website
           git config --global user.name "cathy-cloud[bot]"
           git config --global user.email "154095190+cathy-cloud[bot]@users.noreply.github.com"
-          branch=auto/resume
-          git checkout -b "$branch"
+          git checkout -b "${{ env.branch }}"
           git add .
           git commit -m "${{ needs.build.outputs.msg }}"
-          git push -fu origin auto/resume
+          git push -fu origin "${{ env.branch }}"
           if gh pr edit "${{ env.branch }}" -b "${{ env.body }}" -t "${{ env.title}}"; then
             gh pr reopen "${{ env.branch }}"
           else
             gh pr create --fill -B main -H "${{ env.branch }}"
           fi
         env:
           GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
-          branch: auto/resume
+          branch: auto/resume-${{ github.run_number }}
           title: Update resume.pdf
           body: |
             Automatically generated by GitHub Actions: