Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/go.yaml

@@ -5,14 +5,14 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Lint
         uses: gardenbed/actions/go-lint@main
   test:
     name: Test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Test
         id: test
         uses: gardenbed/actions/go-cover@main
@@ -27,7 +27,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-go@v6
       - name: Build Binary
         run: go build .