ci: Re-arrange workflows to remove duplication #1129

Job	Run time
build-matrix	1s
Build / JDK 17 / windows-2022	4m 4s
Build / JDK 17 / macOS-latest	1m 55s
Build / JDK 17 / ubuntu-latest	2m 27s
Test / Gradle / JDK 17 / windows-2022	9m 16s
Test / Graal / JDK 17 / windows-2022	6m 20s
Test / Gradle / JDK 17 / macOS-latest	5m 59s
Test / Graal / JDK 17 / macOS-latest	2m 56s
Test / Kotlin / kotlin-1.9	2m 7s
Test / Gradle / JDK 17 / ubuntu-latest	6m 19s
Test / Kotlin / kotlin-2.0	1m 57s
Test / Graal / JDK 17 / ubuntu-latest	3m 51s
Test / Coverage	3m 2s
	50m 14s

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