Update checkout action.

.github/workflows/cd.yml

@@ -3,7 +3,6 @@ name: Create docker images
 on: [create]
 
 jobs:
-
   build:
     name: Build, push, and deploy
     if: ${{ startsWith(github.ref, 'refs/tags/v') }}
@@ -14,7 +13,7 @@ jobs:
         db-type: [postgresql, mysql]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set env
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV