Update dependency react-parallel/pool-tests to v6 #112

Job	Run time
Create Release / Required Labels / Required Labels	3s
Create Release / Set Milestone / Supported Versions Matrix	4s
Create Release / Diff / Composer Diff / Comment composer.lock diff	17s
Create Release / Craft Release	0s
Create Release / Diff / Helm Diff	0s
Create Release / Diff / Terraform Diff	0s
Create Release / Set Milestone / Supported Threading Matrix / Supported Threading Matrix	5s
Create Release / Set Milestone / Figure out what the version should be	41s
Create Release / Set Milestone / Set Milestone / Set Milestone	9s
	1m 19s

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