Bump Robolectric to v4.9.2

Reviewed By: passy, cortinico

Differential Revision: D44167297

fbshipit-source-id: 25851910ef690f7f3d868b22d44897226c2089a2

Author: oprisnik

buildSrc/src/main/java/com/facebook/fresco/buildsrc/TestDeps.kt

@@ -19,7 +19,7 @@ object TestDeps {
 
   const val festAssertCore = "org.easytesting:fest-assert-core:2.0M10"
 
-  const val robolectric = "org.robolectric:robolectric:4.4"
+  const val robolectric = "org.robolectric:robolectric:4.9.2"
 
   const val truth = "com.google.truth:truth:1.0.1"