Update actions/checkout to v6

Co-authored-by: VibeXP Bot <bot@vibexp.io>

Author: shahariaazam

.github/workflows/kind-cluster.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
 
       - name: Set up kind cluster
         run: |

.github/workflows/lint.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Super-linter
         uses: super-linter/super-linter@v5