[FSSDK-10769] bump java sdk to version 4.2.0

Author: raju-opti

build.gradle

@@ -71,7 +71,7 @@ ext {
     build_tools_version = "30.0.3"
     min_sdk_version = 21
     target_sdk_version = 33
-    java_core_ver = "4.0.0"
+    java_core_ver = "4.2.0"
     android_logger_ver = "1.3.6"
     jacksonversion= "2.11.2"
     annotations_ver = "1.2.0"