update cachix and disable magic nix-cache

magic nix cache seems to hang forever.

.github/workflows/cachix.yml

@@ -1,6 +1,12 @@
-name: Binary Cache
+name: Nix Binary Cache
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
 
-on: [push, pull_request, workflow_dispatch]
 jobs:
   nix:
     strategy:
@@ -8,7 +14,7 @@ jobs:
         os:
           - ubuntu-latest
           - macos-15-intel
-        - macos-14
+          - macos-latest
     name: "Build"
     runs-on: ${{ matrix.os }}
     steps:
@@ -17,14 +23,15 @@ jobs:
         with:
           submodules: recursive
 
-    - uses: DeterminateSystems/nix-installer-action@main
-      with:
-        logger: pretty
-    - uses: DeterminateSystems/magic-nix-cache-action@main
-    - uses: cachix/cachix-action@v14
+      # - uses: DeterminateSystems/nix-installer-action@main
+      #   with:
+      #     logger: pretty
+      # - uses: DeterminateSystems/magic-nix-cache-action@main
+      - uses: cachix/install-nix-action@v31
+      - uses: cachix/cachix-action@v16
         with:
           name: lan-mouse
-        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
 
       - name: Build lan-mouse (x86_64-linux)
         if: matrix.os == 'ubuntu-latest'
@@ -35,6 +42,5 @@ jobs:
         run: nix build --print-build-logs --show-trace .#packages.x86_64-darwin.lan-mouse
 
       - name: Build lan-mouse (aarch64-darwin)
-      if: matrix.os == 'macos-14'
+        if: matrix.os == 'macos-latest'
         run: nix build --print-build-logs --show-trace .#packages.aarch64-darwin.lan-mouse
-