Update actions/checkout action to v4

Author: renovate[bot]

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

@@ -34,7 +34,7 @@ jobs:
           - package: backend
             deploy: true
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Login to my Registry
         uses: docker/login-action@v1
         with:
@@ -83,7 +83,7 @@ jobs:
       matrix:
         package: ['frontend', 'backend']
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Login to my Registry
         uses: docker/login-action@v1
         with:

.github/workflows/update-shrinkwrap-and-test.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         node-version: [16.x]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with: