Upgrade to Jetty 12.1.2 and 12.0.28. #1648

Job	Run time
build (ubuntu-latest, 26-ea, temurin)	35m 57s
build (ubuntu-latest, 17, temurin)	44m 2s
build (ubuntu-latest, 25, temurin)	38m 12s
build (ubuntu-latest, 21, temurin)	42m 55s
	2h 41m 6s

Provide feedback