Merge pull request #4 from it-at-m/renovate/actions-checkout-4.x

chore(deps): update actions/checkout action to v4

Author: ThomasAFink

.github/workflows/build-images.yaml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Log in to GitHub Container Registry
         run: echo "${{ env.GHCR_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
@@ -76,7 +76,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Log in to GitHub Container Registry
         run: echo "${{ env.GHCR_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
@@ -129,7 +129,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Log in to GitHub Container Registry
         run: echo "${{ env.GHCR_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin