ci: Only build arm64 wheels on releases/manual trigger

.github/workflows/build_wheels.yml

@@ -1,10 +1,13 @@
 name: Build Wheels
 
 on:
-  push:
   pull_request:
     branches:
       - master
+  release:
+    types: [published]
+  workflow_dispatch:
+
 
 jobs:
   build_wheels:
@@ -14,6 +17,28 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest]
 
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules:  'true'
+          fetch-depth: 0
+
+      - name: Build wheels
+        uses: pypa/[email protected]
+        env:
+          CIBW_ARCHS: auto64
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
+
+  build_arm64_wheels:
+    # Emulation takes a long time so we save it for release/manual triggering
+    name: Build arm64 wheels via emulation
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name != 'pull_request' }}
+
     steps:
       - uses: actions/checkout@v4
         with:
@@ -29,9 +54,10 @@ jobs:
       - name: Build wheels
         uses: pypa/[email protected]
         env:
-          CIBW_ARCHS_LINUX: auto64 aarch64
+          CIBW_ARCHS_LINUX: aarch64
 
       - uses: actions/upload-artifact@v4
         with:
-          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          name: cibw-wheels-arm64
           path: ./wheelhouse/*.whl
+