build(deps): bump DeterminateSystems/nix-installer-action from 10 to 12

Bumps [DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action) from 10 to 12.
- [Release notes](https://github.com/determinatesystems/nix-installer-action/releases)
- [Commits](https://github.com/determinatesystems/nix-installer-action/compare/v10...v12)

---
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/build.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/magic-nix-cache-action@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
         with:
           extra-conf: |
             keep-going = true

.github/workflows/check.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
       - name: Check flake lockfile
         uses: DeterminateSystems/flake-checker-action@v5
       - name: Check flake outputs

.github/workflows/iso.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/magic-nix-cache-action@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
       - name: Build ISO
         run: |
           nix build .#images.${{ matrix.arch }}.bootstrap-install-iso --impure --out-link build-iso-result

.github/workflows/site.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/magic-nix-cache-action@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
       - env:
           NIXPKGS_ALLOW_UNFREE: "1"
         run: nix develop .#docs --impure -c hugo -s ./docs/

.github/workflows/update-firefox-addons.yml

@@ -18,7 +18,7 @@ jobs:
         id: metadata
         run: echo "DATE=$(date +%F)" >> "$GITHUB_OUTPUT"
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
       - env:
           NIXPKGS_ALLOW_UNFREE: "1"
         run: nix develop --impure -c mozilla-addons-to-nix pkgs/firefox-addons/firefox-addons.json pkgs/firefox-addons/default.nix

.github/workflows/update.yml

@@ -14,7 +14,7 @@ jobs:
       contents: write
     steps:
       - uses: actions/checkout@v4
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v12
       - name: Update flake inputs
         run: |
           nix flake update --commit-lock-file --commit-lockfile-summary "flake.lock: update inputs"