Run CI in parallel

Harmonize parallel jobs

Author: hannesa2

.github/workflows/android-emulator.yml

@@ -1,12 +1,12 @@
-name: Android Emulator test
+name: Android CI
 
 on:
   pull_request:
     types: [opened, synchronize, reopened]
 
 jobs:
-  build:
-    runs-on: macOS-latest
+  Build:
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: set up JDK 1.8
@@ -15,6 +15,14 @@ jobs:
           java-version: 1.8
       - name: Build with Gradle
         run: ./gradlew build
+  Espresso:
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
       - name: Android Emulator test
         uses: ReactiveCircus/android-emulator-runner@v2.8.0
         with: