Update checkout gha

Author: polyaxon-ci

.github/workflows/mloperator-lint.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone the code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v5

.github/workflows/mloperator-test-e2e.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone the code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v5

.github/workflows/mloperator-test.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone the code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v5