Update actions/checkout action to v7

Signed-off-by: red-hat-konflux-kflux-prd-rh02 <190377777+red-hat-konflux-kflux-prd-rh02[bot]@users.noreply.github.com>

Author: red-hat-konflux-kflux-prd-rh02[bot]

.github/workflows/tests.yaml

@@ -9,7 +9,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
 
       - name: Set up Go
         uses: actions/setup-go@v6