appsdk-bump-app-catalog 675 bumping sdk to 2300-4a6048c

sdk commit: RallySoftware/appsdk@29db7fdb633edfcd2287f840bdbbae534b6c30b7
author: Ben Ridge and Matt Novinger
message: DE20992 fixed the "Move to Position" dialog to only show children of the same type

sdk commit: RallySoftware/appsdk@0808af706f71abc0e8d58772ca2dd159ad651198
author: Brandon Fryslie and Robert Everett
message: DE21200: Boolean dropdowns should default to the record's value for that field

sdk commit: RallySoftware/appsdk@d6904e6065a92d4d7abc41a5c0dcb6c4cb10a49d
author: Ben Ridge and Matt Novinger
message: DE20992 Refactorings from code review

sdk commit: RallySoftware/appsdk@c61120424acaa222d83f7f390069ae7f3722a57a
author: Matt Parrish and Steve Neely
message: S55750: Add ability to set test cases under test sets