Merge pull request #798 from ldennington/homebrew-publish-m1-package

macos arm64: Homebrew updates

Author: ldennington

.github/workflows/release-homebrew.yaml

@@ -14,5 +14,6 @@ jobs:
         tap: microsoft/git
         name: git-credential-manager-core
         type: cask
-        releaseAsset: gcm-osx-x64-(.*)\.pkg
-        alwaysUsePullRequest: true
+        releaseAsset: |
+          gcm-osx-x64-(.*)\.pkg
+          gcm-osx-arm64-(.*)\.pkg