www/tomcat-devel: update to 11.0.0-M18
Changelog:
https://tomcat.apache.org/tomcat-11.0-doc/changelog.html#Tomcat_11.0.0-M18_(markt)
Approved by: arrowd (mentor, implicit)
MFH: 2024Q1
(cherry picked from commit e487ad54d3b66d73d04e70ed2945aafb7968652b)