fix(ci): try using a different nix-install

Author: MattSturgeon

.github/workflows/draw-keymaps.yml

@@ -28,9 +28,7 @@ jobs:
           submodules: recursive
 
       - name: Install nix
-        uses: DeterminateSystems/nix-installer-action@main
-      - name: Setup nix cache
-        uses: DeterminateSystems/magic-nix-cache-action@main
+        uses: cachix/install-nix-action@v25
 
       - name: Draw keymaps
         run: nix run . -- draw