Update actions/checkout action to v6

.gitea/workflows/build.yaml

@@ -14,7 +14,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Login to Container Registry
         if: ${{ gitea.event_name != 'pull_request' }}

.gitea/workflows/lint.yaml

@@ -10,7 +10,7 @@ jobs:
       - name: Set up Bun
         uses: oven-sh/setup-bun@v2
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install dependencies
         run: bun install --frozen-lockfile
       - name: Lint TypeScript