Bump version to 5.4.3

app/build.gradle

@@ -61,8 +61,8 @@ protobuf {
     }
 }
 
-def canonicalVersionCode = 788
-def canonicalVersionName = "5.4.2"
+def canonicalVersionCode = 789
+def canonicalVersionName = "5.4.3"
 
 def postFixSize = 100
 def abiPostFix = ['universal'   : 0,