Bump actions/checkout from 3 to 4 #9

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	name: Pull request with Maven

	on: [pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Set up JDK 11
	uses: actions/setup-java@v3
	with:
	distribution: 'zulu'
	java-version: 11

	- name: Setup Maven
	uses: stCarolas/setup-maven@v5
	with:
	maven-version: 3.9.6

	- name: Cache local Maven repository
	uses: actions/cache@v3
	with:
	path: ~/.m2/repository
	key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
	restore-keys: \|
	${{ runner.os }}-maven-

	- name: Build
	run: mvn clean verify

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