Update compiler settings to Java 21 #107

	name: Wonder Master Build
	on:
	push:
	branches: [cx-dev]
	tags-ignore:
	- wonder-*

	jobs:
	deploy:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout Wonder Source Code
	uses: actions/checkout@v1

	- name: Cache Maven Dependencies
	uses: actions/cache@v1
	with:
	path: ~/.m2 # maven dependencies are stored in `~/.m2` on Linux
	key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
	restore-keys: \|
	${{ runner.os }}-build-${{ env.cache-name }}-
	${{ runner.os }}-build-
	${{ runner.os }}-

	- name: Set up Java 21
	id: setup-java-21
	uses: actions/setup-java@v2
	with:
	distribution: 'temurin'
	java-version: '21'

	- name: Set up Toolchain
	shell: bash
	run: \|
	cat << EOF > $HOME/.m2/toolchains.xml
	<?xml version="1.0" encoding="UTF8"?>
	<toolchains>
	<toolchain>
	<type>jdk</type>
	<provides>
	<version>21</version>
	<vendor>temurin</vendor>
	</provides>
	<configuration>
	<jdkHome>${{ env.JAVA_HOME }}</jdkHome>
	</configuration>
	</toolchain>
	</toolchains>
	EOF

	- name: Test install Snapshots with Maven
	run: mvn -B install --file pom.xml -s .maven_settings.xml -DretryFailedDeploymentCount=10

Provide feedback