Update actions/checkout action to v5

Author: renovate[bot]

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

@@ -10,7 +10,7 @@ jobs:
   build_and_deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: npm ci && npm run build
       - uses: FirebaseExtended/action-hosting-deploy@v0
         with:

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-node@v4
         with:
           node-version: '22'