[CI] bump actions/checkout version

Author: GuillaumeDSM

.github/workflows/docker.yml

@@ -12,7 +12,7 @@ jobs:
     name: ubuntu-latest - Docker - lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Run hadolint
         uses: reviewdog/action-hadolint@v1
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set Environment Variables
         run: |