ci: simplistic way to get macOS running #640

Job	Run time
Java tests (swift:6.1.2 jdk:corretto os:jammy)	8m 20s
Swift tests (swift:6.1.2 jdk:corretto os:jammy)	5m 7s
Java tests (swift:6.1.2 jdk:corretto os:macos)	1m 20s
Swift tests (swift:6.1.2 jdk:corretto os:macos)	1m 57s
Verify Sample JavaDependencySampleApp (swift:6.1.2 jdk:corretto os:sequoia)	1s
Verify Sample SwiftAndJavaJarSampleLib (swift:6.1.2 jdk:corretto os:sequoia)	1s
Verify Sample SwiftKitSampleApp (swift:6.1.2 jdk:corretto os:sequoia)	1s
Verify Sample JavaKitSampleApp (swift:6.1.2 jdk:corretto os:sequoia)	1s
Verify Sample JavaSieve (swift:6.1.2 jdk:corretto os:sequoia)	13m 45s
Verify Sample JavaProbablyPrime (swift:6.1.2 jdk:corretto os:sequoia)	1s
Verify Sample JavaDependencySampleApp (swift:6.1.2 jdk:corretto os:jammy)	4m 28s
Verify Sample JavaKitSampleApp (swift:6.1.2 jdk:corretto os:jammy)	3m 38s
Verify Sample JavaSieve (swift:6.1.2 jdk:corretto os:jammy)	58s
Verify Sample SwiftKitSampleApp (swift:6.1.2 jdk:corretto os:jammy)	4m 11s
Verify Sample SwiftAndJavaJarSampleLib (swift:6.1.2 jdk:corretto os:jammy)	3m 56s
Verify Sample JavaProbablyPrime (swift:6.1.2 jdk:corretto os:jammy)	3m 28s
soundness / YAML lint check	5s
soundness / Documentation check	41s
soundness / Broken symlinks check	4s
soundness / Python lint check	8s
soundness / Unacceptable language check	6s
soundness / Format check	0s
soundness / License headers check	5s
soundness / Shell check	32s
soundness / API breakage check	0s
	52m 54s

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