Update gitee.yml

Author: songyumeng

.github/workflows/gitee.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout'
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: 'Mirror to gitee'
         uses: pixta-dev/repository-mirroring-action@v1
         with: