Release 6.3.9

- Updates Aft and Googlepay and Applepay in payment sessions and Payment Request
- Updates several properties, APMs and Disputes endpoint
- Updates in Payment contexts and accounts
- Improves deserialisation responses

gradle.properties

@@ -1,5 +1,5 @@
 group=com.checkout
-version=6.3.8
+version=6.3.9
 
 maven2_url=https://oss.sonatype.org/service/local/staging/deploy/maven2/
 snapshot_url=https://oss.sonatype.org/content/repositories/snapshots/