Update asm to 6.2.1

Bug:
Change-Id: I403d0b021a3ae45083c7a83553491c29ac4f46c8
diff --git a/build.gradle b/build.gradle
index 52200e6..6825b7f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@
 ext {
     androidSupportVersion = '25.4.0'
     apacheCommonsVersion = '1.12'
-    asmVersion = '6.0'
+    asmVersion = '6.2.1'
     autoValueVersion = '1.5'
     espressoVersion = '3.0.0'
     fastutilVersion = '7.2.0'