feat: Cache identity responses #1506

Job	Run time
Build Distribution Bundle	42s
Test Jest (16.x)	25s
Test Jest (17.x)	36s
Test Jest (18.x)	29s
Test Jest (19.x)	28s
Test Jest (20.x)	24s
Get Bundle Size from Current Branch	24s
Get Bundle Size from Master	6s
Core Tests / Core SDK Tests	1m 16s
Calculate Bundled Diff / Calculate Bundle Size Difference	12s
Generate Report	1s
Test Stub	2m 17s
Integration Tests: webpack Common JS / webpack CJS Test	1m 5s
Integration Tests: Browserfy Common JS / Browserfy CJS Test	1m 6s
Integration Tests: Rollup Common JS / Rollup CJS Test	1m 3s
Integration Tests: webpack Module JS / webpack Module Test	1m 3s
Integration Tests: Require JS / Require JS Test	49s
Integration Tests: Rollup Module JS / Rollup Module Test	1m 1s
Save PR Number for Dependabot Automerge / Save PR Number for Dependabot Automerge	0s
	13m 27s

Provide feedback