test(e2e): use yarn run scripts versus custom build commands

Author: mikehardy

.github/workflows/tests_e2e_android.yml

@@ -95,7 +95,7 @@ jobs:
           timeout_minutes: 15
           retry_wait_seconds: 60
           max_attempts: 3
-          command: cd tests/android && ./gradlew assembleDebug assembleAndroidTest lintDebug -DtestBuildType=debug -Dorg.gradle.daemon=false
+          command: yarn tests:android:build
 
       - name: Metro Bundler Cache
         uses: actions/cache@v2

.github/workflows/tests_e2e_ios.yml

@@ -127,9 +127,8 @@ jobs:
           ccache -s
           export SKIP_BUNDLING=1
           export RCT_NO_LAUNCH_PACKAGER=1
-          cd tests
           set -o pipefail
-          ./node_modules/.bin/detox build --configuration ios.sim.debug
+          yarn tests:ios:build
           ccache -s
         shell: bash