Remove curl dependency and disable OAuth Bearer SASL mechanism #30

Job	Run time
Unit tests / Unit tests (swift:5.9-jammy, 5.9, true)	2m 24s
Unit tests / Unit tests (swift:5.10-jammy, 5.10, true)	2m 8s
Unit tests / Unit tests (swift:6.0-jammy, 6.0, true)	2m 25s
Unit tests / Unit tests (swiftlang/swift:nightly-6.0-jammy, nightly-6.0, true)	2m 54s
Unit tests / Unit tests (swiftlang/swift:nightly-main-jammy, nightly-main, true)	2m 53s
Cxx interop / Linux (5.9)	1m 59s
Cxx interop / Windows (6.0)	3s
Cxx interop / Linux (5.10)	1m 53s
Cxx interop / Linux (6.0)	2m 16s
Cxx interop / Windows (nightly-6.0)	1s
Cxx interop / Linux (nightly-6.0)	2m 40s
Soundness / API breakage check	0s
Cxx interop / Windows (nightly-main)	2s
Soundness / Documentation check	0s
Cxx interop / Linux (nightly-main)	2m 39s
Soundness / License headers check	5s
Soundness / Unacceptable language check	5s
Soundness / Broken symlinks check	4s
Soundness / Format check	40s
Soundness / Python lint check	10s
Soundness / Shell check	34s
Soundness / YAML lint check	4s
	25m 59s

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