Renovate: actions/checkout to v4

.github/workflows/checks.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout source
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: set up python
         uses: actions/setup-python@v2

.github/workflows/molecule.yml

@@ -21,7 +21,7 @@ jobs:
           - rocky8
     steps:
       - name: Check out the codebase
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: "mirsg.provision"
       - name: Set up Python 3.9