test: see if using another plugin will work

Signed-off-by: silver <silver@skynet.ie>

.forgejo/workflows/update_input.yaml

@@ -17,13 +17,16 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - uses: https://github.com/cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
       - run: nix flake lock --update-input "${{ inputs.input_to_update }}"
         shell: bash
       - run: |
               attic login skynet https://nix-cache.skynet.ie/ $CACHE_KEY
               attic use skynet-cache
               attic watch-store skynet-cache &
-              nix --extra-experimental-features 'nix-command flakes' develop
+              nix develop
               colmena build -v --on @active-dns
               colmena build -v --on @active-core
               colmena build -v --on @active