Update a few things

Signed-off-by: Šimon Brandner <[email protected]>

Author: SimonBrandner

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Unzip models
         run: ./scripts/unzip_models.sh
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v30
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - run: nix flake check