build(deps): bump DeterminateSystems/update-flake-lock from 10 to 12 (#241)

Bumps [DeterminateSystems/update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) from 10 to 12.
- [Release notes](https://github.com/DeterminateSystems/update-flake-lock/releases)
- [Commits](https://github.com/DeterminateSystems/update-flake-lock/compare/v10...v12)

---
updated-dependencies:
- dependency-name: DeterminateSystems/update-flake-lock
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

.github/workflows/flake-updates.yml

@@ -16,4 +16,4 @@ jobs:
             experimental-features = nix-command flakes
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@v10
+        uses: DeterminateSystems/update-flake-lock@v12