chore(deps): update cachix/install-nix-action digest to 96951a3

Author: renovate[bot]

.github/workflows/lint.yaml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
-      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15 # v31
+      - uses: cachix/install-nix-action@96951a368ba55167b55f1c916f7d416bac6505fe # v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable