chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/test.yaml

@@ -13,7 +13,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - name: Test
         run: |
           go test ./... -v -race -coverprofile=coverage.txt -covermode=atomic
@@ -27,7 +27,7 @@ jobs:
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - uses: actions/cache@v4
         with:
           # In order: