www/tomcat{85,9,-devel}: update to 8.5.56, 9.0.36, 10.0.0-M6

8.x changelog: https://tomcat.apache.org/tomcat-8.5-doc/changelog.html#Tomcat_8.5.56_(markt)
9.x changelog: https://tomcat.apache.org/tomcat-9.0-doc/changelog.html#Tomcat_9.0.36_(markt)
10.x changelog: https://tomcat.apache.org/tomcat-10.0-doc/changelog.html#Tomcat_10.0.0-M6_(markt)

PR: 247097
Submitted by: VVD <vvd@unislabs.com> (maintainer)
MFH: 2020Q2