Bump DeterminateSystems/nix-installer-action from 13 to 14

Bumps [DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action) from 13 to 14.
- [Release notes](https://github.com/determinatesystems/nix-installer-action/releases)
- [Commits](DeterminateSystems/nix-installer-action@v13...v14)

---
updated-dependencies:
- dependency-name: DeterminateSystems/nix-installer-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/update-inputs.yaml

@@ -12,7 +12,7 @@ jobs:
       - name: checkout
         uses: actions/checkout@v4
       - name: install nix
-        uses: DeterminateSystems/nix-installer-action@v13
+        uses: DeterminateSystems/nix-installer-action@v14
       - name: set up nix cache
         uses: DeterminateSystems/magic-nix-cache-action@v7
       - name: update inputs