bridge/appsdk-bump-app-catalog 478 bumping sdk to almci-master-3293-e4216fc

sdk commit: RallySoftware/appsdk@e4216fcb1b80184e112aae2040d60f65d48d6ec8
author: Wade Peterson, Jonathan Baker and Andrew Grauch
message: S77867: [Milestones] Allow Milestones column to be added on the lowest-level PI EDP User Stories tab