[core] Only one `LambdaRuntime.run()` can be called at a time (fix #507) #636

Job	Run time
musl	1m 34s
Semantic Version label check	6s
Unit tests / Construct unit test matrix	5s
Swift 6 Language Mode / Swift 6 language mode	1m 19s
Soundness / API breakage check	2m 37s
Soundness / Broken symlinks check	7s
Soundness / Documentation check	1m 36s
Soundness / Unacceptable language check	6s
Integration Tests / Test Examples/HelloJSON on	1m 53s
Soundness / Python lint check	6s
Soundness / Shell check	35s
Integration Tests / Test Examples/ResourcesPackaging on	1m 48s
Integration Tests / Test Examples/BackgroundTasks on	1m 49s
Integration Tests / Test Examples/APIGateway on	1m 54s
Soundness / Format check	36s
Integration Tests / Test Examples/APIGateway+LambdaAuthorizer on	2m 1s
Soundness / License headers check	4s
Soundness / YAML lint check	4s
Integration Tests / Test Examples/HelloWorld on	1m 51s
Integration Tests / Test Examples/S3EventNotifier on	2m 43s
Integration Tests / Test Examples/S3_AWSSDK on	6m 35s
Integration Tests / Test Examples/Streaming on	1m 49s
Integration Tests / Test Examples/S3_Soto on	9m 13s
Integration Tests / Test Examples/Tutorial on	3m 3s
Integration Tests / Test Examples/Testing on	1m 55s
Integration Tests / Test archive plugin (ResourcesPackaging)	2m 28s
Integration Tests / Test archive plugin (HelloWorld)	2m 40s
Integration Tests / No dependencies on Foundation	1m 56s
Unit tests / Unit tests / Linux (6.1)	1m 26s
Unit tests / Unit tests / Linux (nightly-main)	1m 54s
Unit tests / Unit tests / Linux (nightly-next)	1m 56s
Unit tests / Unit tests / Linux (6.0)	1m 36s
	59m 25s

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