Merge pull request #12 from personnummer/renovate/actions-checkout-6.x

Update actions/checkout action to v6

Author: bombsimon

.github/workflows/elixir.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup elixir
         uses: erlef/setup-beam@v1
         with: