chore: add a test to verify that deployment notifications work (#1188) #2894

Job	Run time
Lint	51s
Console	52s
Test Kotlin	1m 1s
Proto Breaking Change Check	6s
SQL	35s
Test Go	1m 6s
Test README	1m 3s
Integration Tests / prepare	5s
Integration Tests / integration (TestLifecycle)	20s
Integration Tests / integration (TestHttpIngress)	31s
Integration Tests / integration (TestDatabase)	20s
Integration Tests / integration (TestExternalCalls)	21s
Integration Tests / integration (TestPubSub)	20s
Integration Tests / integration (TestSchemaGenerate)	31s
Auto Version	1s
	8m 3s

Provide feedback