chore(deps): update cachix/install-nix-action digest to fd24c48

Author: renovate[bot]

.github/workflows/update.yml

@@ -25,7 +25,7 @@ jobs:
       with:
         repository: nix-community/nur-combined
         path: nur-combined
-    - uses: cachix/install-nix-action@56a7bb7b56d9a92d4fd1bc05758de7eea4a370a8 # v31
+    - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |