Add 2.2.1 to CHANGELOG.md #739

	name: Mutation Testing
	on:
	pull_request:

	jobs:
	pitest:
	# Only run on PRs from the repo. PRs from forks will fail due to lack of permissions and
	# must use a two stage process
	if: github.event.pull_request.head.repo.full_name == github.repository
	runs-on: ubuntu-latest
	steps:
	- name: Checkout project
	uses: actions/checkout@v4
	with:
	# important to set a fetch depth of 2. By default the checkout action make no history available
	fetch-depth: 2
	- name: Setup Java JDK
	uses: actions/[email protected]
	with:
	distribution: 'temurin'
	java-version: 21
	- name: run pitest
	working-directory: ./service
	run: ./gradlew pitest-github
	env:
	REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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