Update install-nix-action version (#2895)

Fixes ci crash

Author: AndreasArvidsson

.github/actions/lint-lua-ls/action.yml

@@ -3,7 +3,7 @@ description: "Lints all lua files with lua-language-server"
 runs:
   using: "composite"
   steps:
-    - uses: cachix/install-nix-action@v27
+    - uses: cachix/install-nix-action@v31
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - uses: DeterminateSystems/magic-nix-cache-action@v2