chore(deps): update actions/checkout action to v4 #543

	name: Java Lint CI
	on:
	push:
	branches:
	- main
	pull_request:
	workflow_dispatch:
	permissions:
	contents: read

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	uses: step-security/harden-runner@8ca2b8b2ece13480cda6dacd3511b49857a23c09 # v2.5.1
	with:
	disable-sudo: true
	egress-policy: block
	allowed-endpoints: >
	github.com:443
	repo.maven.apache.org:443
	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
	- name: Set up JDK
	uses: actions/setup-java@cd89f46ac9d01407894225f350157564c9c7cee2 # v3.12.0
	with:
	java-version: 11.x
	distribution: temurin
	- name: Build API with Maven
	run: (cd functions-framework-api/ && mvn install)
	- name: Lint Functions Framework API
	run: (cd functions-framework-api/ && mvn clean verify -DskipTests -P lint)
	- name: Build Invoker with Maven
	run: (cd functions-framework-api/ && mvn install)
	- name: Lint Invoker
	run: (cd invoker/ && mvn clean verify -DskipTests -P lint)
	formatting:
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	uses: step-security/harden-runner@8ca2b8b2ece13480cda6dacd3511b49857a23c09 # v2.5.1
	with:
	egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs

	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1 # v2 minimum required
	- name: Run formatter
	id: formatter
	uses: axel-op/googlejavaformat-action@dbff853fb823671ec5781365233bf86543b13215 # v3
	with:
	args: "--replace"
	skip-commit: true
	- name: Print diffs
	run: git --no-pager diff --exit-code

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