Bump DeterminateSystems/nix-installer-action from 11 to 12 (#322)

Bumps [DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action) from 11 to 12.
- [Release notes](https://github.com/determinatesystems/nix-installer-action/releases)
- [Commits](DeterminateSystems/nix-installer-action@v11...v12)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/update_deps.yaml

@@ -11,7 +11,7 @@ jobs:
       - name: checkout
         uses: actions/[email protected]
       - name: install nix
-        uses: DeterminateSystems/nix-installer-action@v11
+        uses: DeterminateSystems/nix-installer-action@v12
       - name: setup git
         run: | 
           git config user.email [email protected]