build: Upgrade to checkout action v3

Author: Julien Ruaux

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Build
         uses: redis-field-engineering/redis-build-action@v1