Bump version to 0.1.1, drop 1.20.5+ support, add 1.21 support #20

	name: Gradle Build, Test, and Check

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up JDK 21
	uses: actions/setup-java@v4
	with:
	java-version: 21
	distribution: 'temurin'
	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Build Networking with Gradle
	run: ./gradlew build test
	- name: Checkstyle
	run: ./gradlew check

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