[core] Only one `LambdaRuntime.run()` can be called at a time (fix #507) #551

Job	Run time
Semantic Version label check	4s
musl	1m 40s
Unit tests / Construct unit test matrix	3s
Integration Tests / Test archive plugin (HelloWorld)	2m 26s
Integration Tests / No dependencies on Foundation	1m 56s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 24s
Integration Tests / Test Examples/APIGateway on	1m 59s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	1m 53s
Integration Tests / Test Examples/BackgroundTasks on	1m 47s
Soundness / API breakage check	1m 36s
Integration Tests / Test Examples/HelloJSON on	1m 45s
Soundness / Broken symlinks check	3s
Integration Tests / Test Examples/HelloWorld on	1m 44s
Integration Tests / Test Examples/ResourcesPackaging on	1m 47s
Soundness / Documentation check	1m 46s
Integration Tests / Test Examples/S3EventNotifier on	2m 0s
Soundness / Format check	40s
Integration Tests / Test Examples/S3_AWSSDK on	3m 32s
Soundness / License headers check	3s
Integration Tests / Test Examples/S3_Soto on	3m 34s
Soundness / Shell check	31s
Integration Tests / Test Examples/Streaming on	1m 53s
Integration Tests / Test Examples/Testing on	1m 51s
Soundness / Unacceptable language check	3s
Integration Tests / Test Examples/Tutorial on	1m 58s
Soundness / YAML lint check	6s
Soundness / Python lint check	12s
Swift 6 Language Mode / Swift 6 language mode	1m 21s
Unit tests / Unit tests / Linux (6.0)	1m 25s
Unit tests / Unit tests / Linux (nightly-next)	1m 37s
Unit tests / Unit tests / Linux (nightly-main)	1m 41s
	45m 20s

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