build(deps): bump DeterminateSystems/determinate-nix-action

Bumps [DeterminateSystems/determinate-nix-action](https://github.com/determinatesystems/determinate-nix-action) from 3.11.3 to 3.12.0.
- [Release notes](https://github.com/determinatesystems/determinate-nix-action/releases)
- [Commits](DeterminateSystems/determinate-nix-action@v3.11.3...v3.12.0)

---
updated-dependencies:
- dependency-name: DeterminateSystems/determinate-nix-action
  dependency-version: 3.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

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

@@ -11,7 +11,7 @@ inputs:
 runs:
   using: composite
   steps:
-  - uses: DeterminateSystems/determinate-nix-action@v3.11.3
+  - uses: DeterminateSystems/determinate-nix-action@v3.12.0
     with:
       extra-conf: |
         accept-flake-config = true