CI: also add arm64 wheels to be on the safe side

Author: MuellerSeb

.github/workflows/main.yml

@@ -57,6 +57,7 @@ jobs:
         - { os: windows-latest, arch: AMD64 }
         - { os: windows-latest, arch: x86 }
         - { os: macos-latest, arch: x86_64 }
+        - { os: macos-latest, arch: arm64 }
         - { os: macos-latest, arch: universal2 }
 
     steps: