Fix for deprecated of `set-output` in GH actions #66

	# This workflow will test and build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
	# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven

	name: Test and Package

	on:
	push:
	branches: [ master ]
	paths-ignore:
	- '**.md'
	pull_request:
	branches: [ master ]
	paths-ignore:
	- '**.md'
	release:
	types: [ prereleased, released ]

	jobs:
	test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up JDK 11
	uses: actions/setup-java@v2
	with:
	java-version: '11'
	distribution: 'temurin'
	cache: maven
	- name: Run Java tests
	run: mvn --batch-mode --update-snapshots test
	- name: Persist Java tests reports
	if: always()
	uses: actions/upload-artifact@v2
	with:
	name: Test reports
	path: \|
	gtfs-realtime-validator-lib/target/surefire-reports
	gtfs-realtime-validator-webapp/target/surefire-reports
	package:
	needs: [test]
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up JDK 11
	uses: actions/setup-java@v2
	with:
	java-version: '11'
	distribution: 'temurin'
	cache: maven
	- name: Deploy to Github Package Registry
	if: github.event_name == 'push' && github.ref == 'refs/heads/master' && matrix.os == 'ubuntu-latest'
	env:
	GITHUB_ACTOR: ${{ github.actor }}
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: mvn --batch-mode --update-snapshots deploy -DskipTests -DGITHUB_REPOSITORY=$GITHUB_REPOSITORY

Provide feedback