Fix: Run CI on Ubuntu (with KVM enabled) instead of MacOS (#105)

Author: Rolf-Smit

.github/workflows/build.yml

@@ -5,8 +5,14 @@ on: [push, pull_request]
 jobs:
   build:
     timeout-minutes: 40
-    runs-on: macOS-latest
+    runs-on: ubuntu-latest
     steps:
+      # See: https://github.blog/changelog/2023-02-23-hardware-accelerated-android-virtualization-on-actions-windows-and-linux-larger-hosted-runners/
+      - name: Enable KVM group perms
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
       - name: checkout
         uses: actions/checkout@v4
       - uses: actions/setup-java@v4