chore(deps): update actions/cache action to v4 #686

	name: Build and upload jar

	on: [ push, pull_request ]

	jobs:
	build:
	# Only run on PRs if the source branch is on someone else's repo
	if: "${{ github.event_name != 'pull_request' \|\| github.repository != github.event.pull_request.head.repo.full_name }}"

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up JDK 17
	uses: actions/setup-java@v4
	with:
	java-version: 17
	distribution: 'temurin'
	- uses: actions/cache@v4
	with:
	path: \|
	~/.gradle/caches
	~/.gradle/wrapper
	key: ${{ runner.os }}-gradle-${{ hashFiles('*/.gradle', '*/gradle-wrapper.properties') }}
	restore-keys: \|
	${{ runner.os }}-gradle-
	- name: Build with Gradle
	run: ./gradlew build
	- name: Upload a Build Artifact
	uses: actions/[email protected]
	with:
	# Artifact name
	name: PistonMOTD
	# A file, directory or wildcard pattern that describes what to upload
	path: build/libs/*.jar

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