chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/.firebase/build-and-deploy.yml

@@ -37,7 +37,7 @@ jobs:
           ref: ${{ github.ref }}
 
       - name: Setup Node
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v6
         with:
           node-version: '12.x'
 

.github/workflows/build-and-deploy.yml

@@ -36,7 +36,7 @@ jobs:
           ref: ${{ github.ref }}
 
       - name: Setup Node
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v6
         with:
           node-version: '12.x'