feat: only do autofmt on main (#1156) #2846

Job	Run time
Lint	51s
SQL	43s
Test Kotlin	1m 21s
Test Go	2m 47s
Console	54s
Proto Breaking Change Check	12s
Integration Tests / prepare	10s
Integration Tests / integration (TestLifecycle)	1m 58s
Integration Tests / integration (TestHttpIngress)	2m 17s
Integration Tests / integration (TestDatabase)	2m 9s
Integration Tests / integration (TestExternalCalls)	2m 19s
Integration Tests / integration (TestPubSub)	2m 10s
Integration Tests / integration (TestSchemaGenerate)	2m 2s
Auto Version / Conventional Commits Auto-version	7s
	20m 0s

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