unify scheduled and main yamls #51

Job	Run time
Swift 6 Language Mode	0s
Integration test / Windows (nightly-6.0)	2s
Soundness / API breakage check	53s
Integration test / Windows (nightly-main)	2s
Integration test / Linux (5.9)	1m 35s
Integration test / Windows (6.0)	1s
Integration test / Linux (5.10)	1m 44s
Soundness / Documentation check	58s
Integration test / Linux (6.0)	1m 39s
Soundness / Unacceptable language check	4s
Integration test / Linux (nightly-6.0)	2m 16s
Soundness / Broken symlinks check	3s
Integration test / Linux (nightly-main)	30s
Soundness / Format check	34s
Soundness / License headers check	4s
Soundness / Python lint check	5s
Soundness / Shell check	32s
Soundness / YAML lint check	2s
Unit tests / Unit tests / Windows (6.0)	2s
Unit tests / Unit tests / Windows (nightly-6.0)	2s
Unit tests / Unit tests / Linux (5.9)	53s
Unit tests / Unit tests / Windows (nightly-main)	3s
Unit tests / Unit tests / Linux (5.10)	46s
Unit tests / Unit tests / Linux (6.0)	59s
Unit tests / Unit tests / Linux (nightly-6.0)	1m 8s
Unit tests / Unit tests / Linux (nightly-main)	30s
	15m 27s

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