No Linux ia32

.github/workflows/build.yml

@@ -37,7 +37,22 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        # Build for supported platforms
+        # https://github.com/electron/electron-packager/blob/ebcbd439ff3e0f6f92fa880ff28a8670a9bcf2ab/src/targets.js#L9
+        # 32-bit Linux unsupported as of 2019: https://www.electronjs.org/blog/linux-32bit-support
         os: [ macOS-latest, ubuntu-latest, windows-latest ]
+        arch: [ x64, arm64 ]
+        include:
+        - os: windows-latest
+          arch: ia32
+        - os: ubuntu-latest
+          arch: armv7l
+        # Publishing artifacts for multiple Windows architectures has
+        # a bug which can cause the wrong architecture to be downloaded
+        # for an update, so until that is fixed, only build Windows x64
+        exclude:
+        - os: windows-latest
+          arch: arm64
     steps:
       - uses: actions/checkout@v3
       - name: Setup Node.js