[core] Only one `LambdaRuntime.run()` can be called at a time (fix #507) #595

Job	Run time
musl	1m 35s
Semantic Version label check	6s
Unit tests / Construct unit test matrix	5s
Swift 6 Language Mode / Swift 6 language mode	1m 17s
Integration Tests / Test archive plugin (HelloWorld)	2m 29s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 30s
Integration Tests / No dependencies on Foundation	1m 49s
Soundness / Shell check	32s
Soundness / Format check	58s
Soundness / Python lint check	9s
Soundness / API breakage check	1m 40s
Soundness / Unacceptable language check	5s
Integration Tests / Test Examples/APIGateway on	1m 59s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	1m 59s
Integration Tests / Test Examples/BackgroundTasks on	1m 47s
Integration Tests / Test Examples/ResourcesPackaging on	1m 44s
Integration Tests / Test Examples/S3EventNotifier on	1m 59s
Integration Tests / Test Examples/HelloJSON on	1m 45s
Integration Tests / Test Examples/S3_AWSSDK on	5m 23s
Integration Tests / Test Examples/S3_Soto on	7m 5s
Integration Tests / Test Examples/Testing on	2m 2s
Integration Tests / Test Examples/Streaming on	1m 44s
Soundness / Documentation check	1m 35s
Integration Tests / Test Examples/Tutorial on	1m 44s
Soundness / YAML lint check	4s
Integration Tests / Test Examples/HelloWorld on	1m 52s
Soundness / Broken symlinks check	4s
Soundness / License headers check	5s
Unit tests / Unit tests / Linux (nightly-next)	1m 43s
Unit tests / Unit tests / Linux (6.1)	1m 21s
Unit tests / Unit tests / Linux (6.0)	1m 25s
Unit tests / Unit tests / Linux (nightly-main)	1m 43s
	52m 18s

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