ci(deps): update determinatesystems/flake-checker-action action to v12

Author: Renovate Bot

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Checkout the repo
         uses: actions/checkout@v4
       - name: Check Nix flake inputs
-        uses: DeterminateSystems/flake-checker-action@v11
+        uses: DeterminateSystems/flake-checker-action@v12
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v18
       - name: Use Github Actions Cache through Magic Nix Cache