chore(deps): bump nixbuild/nix-quick-install-action from 28 to 29

Bumps [nixbuild/nix-quick-install-action](https://github.com/nixbuild/nix-quick-install-action) from 28 to 29.
- [Release notes](https://github.com/nixbuild/nix-quick-install-action/releases)
- [Changelog](https://github.com/nixbuild/nix-quick-install-action/blob/master/RELEASE)
- [Commits](nixbuild/nix-quick-install-action@v28...v29)

---
updated-dependencies:
- dependency-name: nixbuild/nix-quick-install-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/ci.yml

@@ -155,7 +155,7 @@ jobs:
         uses: actions/checkout@v4
 
       - 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

.github/workflows/flake-update.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: nixbuild/nix-quick-install-action@v28
+        uses: nixbuild/nix-quick-install-action@v29
 
       - name: Update flake.lock
         uses: DeterminateSystems/update-flake-lock@v24