📝 Use yml instead of yaml

.github/workflows/deadnix.yaml

@@ -1,17 +0,0 @@
-name: "Nix: check for unused code"
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  deadnix:
-    name: Run deadnix
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
-      - uses: cachix/cachix-action@v14
-        with:
-          name: deadnix
-      - uses: phucleeuwu/deadnix-action@v1