Support Robolectric 4.10.3 (#66)

examples/simple/WORKSPACE

diff --git a/examples/simple/WORKSPACE b/examples/simple/WORKSPACE
index e13e4a5..f746b9b 100644
--- a/examples/simple/WORKSPACE
+++ b/examples/simple/WORKSPACE
@@ -45,7 +45,7 @@
     name = "maven",
     artifacts = [
         "com.google.truth:truth:1.1.3",
-        "org.robolectric:robolectric:4.10.2",
+        "org.robolectric:robolectric:4.10.3",
     ],
     repositories = [
         "https://maven.google.com",