Update to JUnit5, Update to J17 and J21 for tests #1863

	# This workflow will build a Java project with Gradle
	# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle

	name: Java CI with Gradle

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Set up JDK 17
	uses: actions/setup-java@v2
	with:
	distribution: 'temurin'
	java-version: '17'
	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Build with Gradle
	run: ./gradlew build -x docs -x distTar -x distZip
	- name: Build release jar
	env:
	PR_NUMBER: ${{ github.event.pull_request.number }}
	run: \|
	case "${GITHUB_EVENT_NAME}" in
	"pull_request")
	./gradlew buildReleaseJar -PprereleaseTag="PR.${PR_NUMBER}"
	;;
	"push")
	./gradlew buildReleaseJar -PprereleaseTag="SNAPSHOT"
	;;
	*)
	./gradlew buildReleaseJar
	;;
	esac
	- name: Upload build
	uses: actions/upload-artifact@v2.2.2
	with:
	name: Chunky Build
	path: build/installer
	- name: Upload build
	uses: actions/upload-artifact@v2.2.2
	with:
	name: Chunky Core
	path: build/chunky-core-*.jar

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