Attempt to get the build running on our m1 machine

Author: skeet70

.github/workflows/publish.yaml

@@ -27,11 +27,8 @@ jobs:
         system:
           - os: macos-10.15
             target: x86_64-apple-darwin
-          - os: macos-11
+          - os: [self-hosted, macOS, ARM64]
             target: aarch64-apple-darwin
-            # only needed in this case, where we're cross compiling until runners with m1 chips exist
-            pre_gyp_platform: darwin
-            pre_gyp_arch: arm64
           - os: ubuntu-20.04
             target: x86_64-unknown-linux-gnu
           - os: windows-2019