fix: change to bot user

Author: windwp

.github/workflows/sponsors.yml

@@ -12,6 +12,11 @@ jobs:
       - name: Checkout 🛎️
         uses: actions/checkout@v2
 
+      - name: Setup Git Config
+        run: |
+          git config --global user.name 'github-actions[bot]'
+          git config --global user.email '41898282+github-actions[bot]@users.noreply.github.com'
+
       - name: Generate Sponsors 💖
         uses: JamesIves/github-sponsors-readme-action@v1
         with: