feat(ci): use Apple M1 runner in build-nix.

Author: qkaiser

.github/workflows/build-nix.yml

@@ -15,6 +15,8 @@ jobs:
             arch: aarch64-linux
           - os: macos-12
             arch: x86_64-darwin
+          - os: macos-14
+            arch: aarch64-darwin
     name: Build Nix - ${{ matrix.arch }}.${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     steps: