Fixed version conflict error (#652)

Author: DroidPulkit

constants.gradle

@@ -11,5 +11,5 @@ project.ext {
     buildTools = '25.0.2'
 
     firebaseVersion = '10.2.1'
-    supportLibraryVersion = '25.2.0'
+    supportLibraryVersion = '25.3.0'
 }