[core] Only one `LambdaRuntime.run()` can be called at a time (fix #507) #553

Job	Run time
Semantic Version label check	9s
musl	1m 41s
Unit tests / Construct unit test matrix	2s
Integration Tests / Test Examples/APIGateway on	2m 14s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	2m 4s
Integration Tests / Test Examples/BackgroundTasks on	2m 5s
Integration Tests / Test Examples/HelloJSON on	1m 50s
Integration Tests / Test Examples/HelloWorld on	1m 52s
Integration Tests / Test Examples/ResourcesPackaging on	1m 53s
Integration Tests / Test Examples/S3EventNotifier on	1m 55s
Integration Tests / Test Examples/S3_AWSSDK on	5m 17s
Integration Tests / Test Examples/S3_Soto on	6m 49s
Integration Tests / Test Examples/Streaming on	1m 53s
Integration Tests / Test Examples/Testing on	1m 59s
Integration Tests / Test Examples/Tutorial on	2m 0s
Integration Tests / Test archive plugin (HelloWorld)	2m 47s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 42s
Integration Tests / No dependencies on Foundation	2m 7s
Soundness / Unacceptable language check	4s
Soundness / Documentation check	1m 41s
Soundness / API breakage check	1m 33s
Soundness / Broken symlinks check	3s
Soundness / Format check	37s
Soundness / License headers check	3s
Soundness / Shell check	29s
Soundness / YAML lint check	5s
Swift 6 Language Mode / Swift 6 language mode	1m 20s
Soundness / Python lint check	5s
Unit tests / Unit tests / Linux (6.0)	1m 34s
Unit tests / Unit tests / Linux (nightly-next)	1m 36s
Unit tests / Unit tests / Linux (nightly-main)	1m 40s
	52m 9s

Provide feedback