Merge pull request #4 from openstreetmap/dependabot/github_actions/actions/checkout-6

Bump actions/checkout from 5 to 6

Author: Firefishy

.github/workflows/docker.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Docker meta
         id: meta