appsdk-bump-app-catalog 552 bumping sdk to 2096-a6c3999

sdk commit: RallySoftware/appsdk@da7543404fe5a2f5e0d578b9fe9cab475b0b9efe
author: Brandon Fryslie
message: DE20427: Destroy leftover Ext components

sdk commit: RallySoftware/appsdk@97b5080dcbbeae4f3007a7704db15a106c6a1782
author: Brandon Fryslie
message: DE20427: Clean up JS references that were leaking memory

sdk commit: RallySoftware/appsdk@a6c39999c62fc7e698a881959f57a85bef56b138
author: Brandon Fryslie
message: Hedging against Flakiness in StateFieldSpec