Bug 534597 - Unanticipated comparator errors in I20180511-2000
Bug 566115 - Comparator error in I build (I20200816-1800)
Bug 566147 - Comparator errors in I20200817-1800
Bug 575106 - Comparator error in 20210729-0050
Bug 577522 - Update test framework dependencies
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1184
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1378
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1781
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1923