[core] Only one `LambdaRuntime.run()` can be called at a time (fix #507) #585

Job	Run time
Semantic Version label check	4s
musl	1m 34s
Unit tests / Construct unit test matrix	5s
Integration Tests / Test Examples/APIGateway on	16s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	15s
Integration Tests / Test Examples/BackgroundTasks on	15s
Integration Tests / Test Examples/HelloJSON on	15s
Integration Tests / Test Examples/HelloWorld on	15s
Integration Tests / Test Examples/ResourcesPackaging on	16s
Integration Tests / Test Examples/S3EventNotifier on	16s
Integration Tests / Test Examples/S3_AWSSDK on	16s
Integration Tests / Test Examples/S3_Soto on	15s
Integration Tests / Test Examples/Streaming on	14s
Integration Tests / Test Examples/Testing on	14s
Integration Tests / Test Examples/Tutorial on	16s
Integration Tests / Test archive plugin (HelloWorld)	29s
Integration Tests / Test archive plugin (ResourcesPackaging)	28s
Integration Tests / No dependencies on Foundation	29s
Soundness / API breakage check	27s
Soundness / Documentation check	26s
Soundness / Unacceptable language check	5s
Soundness / License headers check	5s
Soundness / Broken symlinks check	4s
Soundness / Format check	25s
Soundness / Shell check	26s
Soundness / YAML lint check	4s
Soundness / Python lint check	7s
Swift 6 Language Mode / Swift 6 language mode	27s
Unit tests / Unit tests / Linux (6.0)	22s
Unit tests / Unit tests / Linux (nightly-next)	24s
Unit tests / Unit tests / Linux (nightly-main)	54s
	10m 28s

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