Update actions/checkout action to v7 (#100)

Co-authored-by: ske-renovate-operator[bot] <289664651+ske-renovate-operator[bot]@users.noreply.github.com>

Author: ske-renovate-operator[bot]

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
       contents: write
     steps:
       - name: Check out code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
       - name: Set up Go