fix issue with failing child tasks in `run_tasks_concurrent` #311

Job	Run time
Run code checks / Run code checks	1m 2s
Generate project documentation	5s
Build Assertoor / Build macos/arm64 binary	46s
Build Assertoor / Build macos/amd64 binary	34s
Build Assertoor / Build linux/arm64 binary	1m 25s
Build Assertoor / Build linux/amd64 binary	24s
Build Assertoor / Build windows/amd64 binary	3m 33s
Build Assertoor / Build amd64 docker image	30s
Build Assertoor / Build arm64 docker image	1m 51s
Build Assertoor / Build multiarch docker image	8s
Build Assertoor / Build additional docker manifests (master)	10s
Build Assertoor / Build additional docker manifests (master-latest)	19s
Create snapshot release	21s
	11m 8s

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