fix(deps): update person directory to v1.8.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apereo.service.persondir:person-directory-api (source)	1.8.11 -> 1.8.16
org.apereo.service.persondir:person-directory-impl (source)	1.8.11 -> 1.8.16

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[Naenyn]

I've updated the code to handle the upstream person directory changes. However, for the time being, the "filter" that a handful of the methods now take as an argument is passed in as null. This will need to be updated if we want to do anything interesting with that filter.

[bjagg]

There are a lot of rolled up commits. Can you see if rebasing to the main branch eliminates commits, please?

I took a shot at it. Not sure things are any better, though. Take another look?

[bjagg]

Pulled down changes and did some light testing. Test users continue to have the same groups and attributes. 🎖️