Update nixbuild/nix-quick-install-action action to v29 (#156)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/actions/setup-nix/action.yml

@@ -4,7 +4,7 @@ runs:
   using: "composite"
   steps:
     - name: Install Nix
-      uses: nixbuild/nix-quick-install-action@v28
+      uses: nixbuild/nix-quick-install-action@v29
 
     - name: Restore and cache Nix store
       uses: nix-community/cache-nix-action@v5