Migrate to GitHub Actions #2

Job	Run time
Swift 6 Language Mode	0s
Integration test / Linux (5.9)	50s
Integration test / Linux (5.10)	48s
Integration test / Linux (6.0)	48s
Integration test / Linux (nightly-6.0)	48s
Integration test / Linux (nightly-main)	48s
Integration test / Windows (6.0)	1s
Integration test / Windows (nightly-6.0)	1s
Integration test / Windows (nightly-main)	2s
Soundness / API breakage check	57s
Soundness / Documentation check	56s
Soundness / License headers check	5s
Soundness / Unacceptable language check	4s
Soundness / Format check	36s
Soundness / Broken symlinks check	4s
Soundness / Shell check	35s
Soundness / Python lint check	7s
Soundness / YAML lint check	8s
Cxx interop / Cxx interop / Windows (nightly-6.0)	2s
Cxx interop / Cxx interop / Windows (6.0)	2s
Cxx interop / Cxx interop / Windows (nightly-main)	2s
Cxx interop / Cxx interop / Linux (5.9)	54s
Cxx interop / Cxx interop / Linux (5.10)	54s
Cxx interop / Cxx interop / Linux (6.0)	52s
Unit tests / Unit tests / Windows (6.0)	2s
Cxx interop / Cxx interop / Linux (nightly-6.0)	52s
Unit tests / Unit tests / Linux (5.9)	53s
Cxx interop / Cxx interop / Linux (nightly-main)	53s
Unit tests / Unit tests / Linux (5.10)	53s
Unit tests / Unit tests / Linux (6.0)	53s
Unit tests / Unit tests / Linux (nightly-6.0)	52s
Unit tests / Unit tests / Linux (nightly-main)	54s
Unit tests / Unit tests / Windows (nightly-6.0)	2s
Unit tests / Unit tests / Windows (nightly-main)	4s
	16m 42s

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