www/tomcat9: update to 9.0.81 (CVE-2023-42794 CVE-2023-42795 CVE-2023-44487 CVE-2023-45648)

Changelog:
https://tomcat.apache.org/tomcat-9.0-doc/changelog.html#Tomcat_9.0.81_(remm)

CVE-2023-42794 Apache Tomcat - denial of service
CVE-2023-42795 Apache Tomcat - information disclosure
CVE-2023-44487 Apache Tomcat - HTTP/2 DoS
CVE-2023-45648 Apache Tomcat - Request Smuggling

Approved by: arrowd (mentor, implicit)

(cherry picked from commit 96293c0299b2a80e72789e020a9e517aa32862df)