Github action: use ubuntu for tests.

.github/workflows/test.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   test:
     timeout-minutes: 45
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -17,6 +17,12 @@ jobs:
           distribution: 'adopt'
           java-version: '17'
 
+      - name: Enable KVM
+        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: run tests
         uses: reactivecircus/[email protected]
         with: