Update firebase-hosting-merge.yml

Author: yuwenma

.github/workflows/firebase-hosting-merge.yml

@@ -13,6 +13,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          fetch-depth: '0'
       - uses: actions/setup-node@v3
         with:
           node-version: 16