chore(deps): update actions/checkout action to v5 (osism#945)

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

.github/workflows/update-images.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up python
         uses: actions/setup-python@v5

.github/workflows/validate-configuration.yml

@@ -19,7 +19,7 @@ jobs:
   validate-configuration:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version: '3.x'