unit testing gradle fix

build.gradle

@@ -78,6 +78,15 @@ dependencies {
 
     // Monologue
     implementation 'com.github.shueja:Monologue:+'
+
+    // Gson
+    // Remove this once choreolib changes get upstreamed
+    implementation 'com.google.code.gson:gson:2.10.1'
+}
+
+test {
+    useJUnitPlatform()
+    systemProperty 'junit.jupiter.extensions.autodetection.enabled', 'true'
 }
 
 // Simulation configuration (e.g. environment variables).