Bump actions/setup-java from 3 to 4 #67

	name: Continuous Integration
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

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

	jobs:
	build:

	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, macos-latest]
	runs-on: ${{ matrix.os }}
	timeout-minutes: 45

	steps:
	- name: Checkout m2e
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	submodules: false
	repository: 'eclipse-m2e/m2e-core'
	ref: 'master'
	- name: Checkout tests
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	submodules: false
	repository: 'tesla/m2e-core-tests'
	path: 'm2e-core-tests'
	- uses: actions/setup-java@v4
	with:
	java-version: '21'
	distribution: 'temurin'
	- name: Set up Maven
	uses: stCarolas/setup-maven@v4.5
	with:
	maven-version: 3.9.9
	- name: Cache local Maven repository
	uses: actions/cache@v3
	with:
	path: ~/.m2/repository
	# re-cache on changes in the pom and target files
	key: ${{ runner.os }}-maven-${{ hashFiles('/pom.xml', '/*.target') }}
	restore-keys: \|
	${{ runner.os }}-maven-
	- name: Build m2e-core
	uses: coactions/setup-xvfb@v1
	with:
	run: mvn clean verify -Pits -Dtycho.p2.baselineMode=warn --batch-mode
	- name: Upload Test Results
	uses: actions/upload-artifact@v3
	with:
	name: test-results-${{ matrix.os }}
	if-no-files-found: error
	path: \|
	${{ github.workspace }}/*/target/surefire-reports/.xml
	event_file:
	name: "Event File"
	runs-on: ubuntu-latest
	steps:
	- name: Upload
	uses: actions/upload-artifact@v3
	with:
	name: Event File
	path: ${{ github.event_path }}

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