Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/push.yml

@@ -23,7 +23,7 @@ jobs:
       packages: read
       statuses: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           # Full git history is needed to get a proper
           # list of changed files within `super-linter`
@@ -74,7 +74,7 @@ jobs:
     steps:
       - id: git-checkout
         name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - id: buildx-setup
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3

.github/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
     steps:
       - id: source-checkout
         name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ matrix.build.branch }}
       - id: set-netbox-docker-version