To lowercase

.github/workflows/gradle.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Validate Gradle wrapper
         uses: gradle/wrapper-validation-action@e6e38bacfdf1a337459f332974bb2327a31aaf4b
       - name: Testing
-        working-directory: ./APP
+        working-directory: ./app
         run: ./gradlew test
       - name: Cleanup Gradle Cache
         # Remove some files from the Gradle cache, so they aren't cached by GitHub Actions.