feat: Cache identity responses #1500

Job	Run time
Build Distribution Bundle	34s
Test Jest (16.x)	25s
Test Jest (17.x)	35s
Test Jest (18.x)	31s
Test Jest (19.x)	28s
Test Jest (20.x)	26s
Get Bundle Size from Master	9s
Get Bundle Size from Current Branch	29s
Core Tests / Core SDK Tests	1m 13s
Calculate Bundled Diff / Calculate Bundle Size Difference	8s
Generate Report	1s
Test Stub	32s
Integration Tests: Rollup Common JS / Rollup CJS Test	1m 2s
Integration Tests: Browserfy Common JS / Browserfy CJS Test	1m 0s
Integration Tests: webpack Common JS / webpack CJS Test	1m 1s
Integration Tests: Rollup Module JS / Rollup Module Test	1m 0s
Integration Tests: webpack Module JS / webpack Module Test	1m 0s
Integration Tests: Require JS / Require JS Test	41s
Save PR Number for Dependabot Automerge / Save PR Number for Dependabot Automerge	0s
	11m 15s

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