Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/kubeconform.yml

@@ -4,7 +4,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
     - name: Check if Services have changed

.github/workflows/linter.yaml

@@ -9,7 +9,7 @@ jobs:
     name: Yaml Linter
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: yaml-lint
       uses: ibiqlik/action-yamllint@v3
       with: