Enable strict concurrency #34

Job	Run time
Benchmarks / Construct Benchmarks matrix	2s
Cxx interop / Construct Cxx interop matrix	3s
Unit tests / Construct unit test matrix	3s
Check cmake lists / Windows (nightly-6.0)	1s
Check cmake lists / Linux (5.9)	41s
Check cmake lists / Windows (nightly-main)	1s
Check cmake lists / Windows (6.0)	3s
Check cmake lists / Linux (5.10)	36s
Check cmake lists / Linux (6.0)	41s
Soundness / API breakage check	2m 11s
Check cmake lists / Linux (nightly-6.0)	37s
Soundness / Broken symlinks check	2s
Check cmake lists / Linux (nightly-main)	43s
Soundness / Documentation check	1m 48s
Soundness / Format check	37s
Soundness / License headers check	4s
Soundness / Python lint check	9s
Soundness / Shell check	38s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	4s
Cxx interop / Cxx interop / Linux (5.9)	1m 19s
Cxx interop / Cxx interop / Linux (5.10)	1m 23s
Benchmarks / Benchmarks / Linux (5.9)	8m 22s
Cxx interop / Cxx interop / Linux (6.0)	1m 44s
Benchmarks / Benchmarks / Linux (5.10)	8m 23s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 54s
Benchmarks / Benchmarks / Linux (6.0)	7m 53s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 53s
Benchmarks / Benchmarks / Linux (nightly-6.0)	9m 11s
Benchmarks / Benchmarks / Linux (nightly-main)	8m 20s
Unit tests / Unit tests / Linux (5.9)	3m 24s
Unit tests / Unit tests / Linux (5.10)	3m 13s
Unit tests / Unit tests / Linux (6.0)	3m 40s
Unit tests / Unit tests / Linux (nightly-6.0)	3m 47s
Unit tests / Unit tests / Linux (nightly-main)	3m 48s
	1h 17m 21s

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