Switch Emulator CI to Ubuntu (#7140)

GitHub switched their MacOS runners to ARM, which makes the Android emulator fail to start. Since we introduced the CI workflow, GitHub upgraded the Ubuntu runners as well, now supporting hardware acceleration. This means we no longer need MacOS. The Ubuntu runner is also about 2 times faster.

.github/workflows/checks.yml

@@ -102,7 +102,7 @@ jobs:
   emulator-test:
     name: "Emulator Test"
     needs: static-analysis
-    runs-on: macOS-latest
+    runs-on: ubuntu-latest
     timeout-minutes: 45
     env:
       api-level: 30
@@ -124,6 +124,11 @@ jobs:
         run: echo "org.gradle.parallel=true" >> local.properties
       - name: Build with Gradle
         run: ./gradlew assemblePlayDebugAndroidTest
+      - 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: Android Emulator test
         uses: reactivecircus/android-emulator-runner@v2
         with:
@@ -133,7 +138,7 @@ jobs:
           force-avd-creation: false
           emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           disable-animations: true
-          script: zsh .github/workflows/runEmulatorTests.sh
+          script: bash .github/workflows/runEmulatorTests.sh
       - uses: actions/upload-artifact@v4
         if: failure()
         with:

.github/workflows/runEmulatorTests.sh

@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/bin/bash
 
 set -o pipefail