KAFKA-12985: Upgrade jetty to 9.4.42 (#10919)
KAFKA-12985: Upgrade jetty to 9.4.42 (#10919)

* 9.4.41 announcement: https://www.eclipse.org/lists/jetty-announce/msg00156.html
* 9.4.42 announcement: https://www.eclipse.org/lists/jetty-announce/msg00158.html

Reviewers: Luke Chen <a747209bc9e65a9d7dd7589245c91b7bed721b13@gmail.com>, Ismael Juma <ismael@juma.me.uk>
TiVo/kafka,apache/kafka,apache/kafka,guozhangwang/kafka,apache/kafka,TiVo/kafka,lindong28/kafka,apache/kafka,TiVo/kafka,guozhangwang/kafka,lindong28/kafka,guozhangwang/kafka,guozhangwang/kafka,lindong28/kafka,lindong28/kafka,TiVo/kafka