ci: cleanup samples testing using matrix #628

Job	Run time
Java tests (swift:6.1.2 jdk:Corretto os:jammy)	9m 13s
Verify Sample JavaDependencySampleApp (swift:6.1.2 jdk:Corretto os:jammy)	6m 25s
Verify Sample JavaProbablyPrime (swift:6.1.2 jdk:Corretto os:jammy)	4m 0s
Verify Sample SwiftAndJavaJarSampleLib (swift:6.1.2 jdk:Corretto os:jammy)	5m 33s
Verify Sample SwiftKitSampleApp (swift:6.1.2 jdk:Corretto os:jammy)	5m 36s
Verify Sample JavaKitSampleApp (swift:6.1.2 jdk:Corretto os:jammy)	4m 2s
Swift tests (swift:6.1.2 jdk:Corretto os:jammy)	5m 0s
Verify Sample JavaSieve (swift:6.1.2 jdk:Corretto os:jammy)	1m 19s
soundness / Documentation check	37s
soundness / Unacceptable language check	3s
soundness / Broken symlinks check	5s
soundness / Python lint check	7s
soundness / Shell check	35s
soundness / YAML lint check	6s
soundness / License headers check	6s
soundness / API breakage check	0s
soundness / Format check	-1s
	42m 46s

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