Add x64 and arm64 to architecture matrix in CI workflow

Author: theapache64

.github/workflows/ci.yml

@@ -76,6 +76,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ macos-latest, ubuntu-latest, windows-latest ]
+        arch: [x64, arm64]
     runs-on: ${{ matrix.os }}
     if: startsWith(github.ref, 'refs/tags/')
     steps: