Explicitly set GPU mode to swiftshader_indirect.

.github/workflows/workflow.yml

@@ -37,7 +37,7 @@ jobs:
         target: google_apis
         arch: x86
         profile: Nexus 6
-        emulator-options: -no-window -no-snapshot -noaudio -no-boot-anim -camera-back none
+        emulator-options: -no-window -gpu swiftshader_indirect -no-snapshot -noaudio -no-boot-anim -camera-back none
         disable-animations: true
         script: |
           ./gradlew help