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[From JEMH v3.3.95-server release notes (made 30-MAY-2022) - https://marketplace.atlassian.com/apps/4832/enterprise-mail-handler-for-jira-jemh/version-history ]
Jira unexpectedly made a breaking change in the 8.22.3 (released 23-May-2022 - https://www.atlassian.com/software/jira/download-archives ) micro release that JEMH was marked compatible with automatically. This release works around the non-longer injectable UserManager.
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