www/onlyoffice-documentserver: Update to 9.0.2.16

Upgrade port version to 9.0.2.16
Upgrade port to use yao-pkg 6.5.1
Revert port dependency to node20, to match upstream
Fix compile time errors on aarch64
Add additional cache cleanup steps in Makefile
Add timestamp based versioning for cache tarball
Shift pkg and npm caches to use github
Take port maintainership

PR: 287819
(cherry picked from commit b293e8710f76edd0b710df7b14f2e130639b76b9)