Add Jonathan Tong to maintainers

[jackfrancis]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Jonathan has consistently demonstrated expertise and endurance on the CAPZ project, and we will be grateful to have him as a maintainer.

Here is a list of substantial PRs primarily reviewed by Jonathan:

• chore(role_assignment): make roleassignment reconcile async #1873
• Make security groups reconcile/delete async #1918
• Make private dns reconcile/delete async #2007
• Make managedcluster reconcile and delete async #2168
• Make route tables reconcile/delete async #1686
• Adding HTTP Proxy support for managed cluster #3847
• Update virtualmachineimages service to SDK v2 #3843
• Enable setting VNet peering properties #3340
• Adding HTTP Proxy support for managed cluster #3847
• Use CAAPH to install cloud-provider-azure in tests #4413

Thank you, Jonathan!

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

• cherry-pick candidate

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (697fa5d) 62.09% compared to head (cfab81d) 62.24%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4526      +/-   ##
==========================================
+ Coverage   62.09%   62.24%   +0.14%     
==========================================
  Files         191      192       +1     
  Lines       18894    19007     +113     
==========================================
+ Hits        11733    11830      +97     
- Misses       6509     6524      +15     
- Partials      652      653       +1     

☔ View full report in Codecov by Sentry.
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[Jont828]

Thanks for the nomination @jackfrancis, it's been a pleasure to work with everyone!

[willie-yao]

/lgtm

Congrats Jonathan! You have done some amazing work for this project and this is well deserved 🚀

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: b87870b44fc9ad335f55246560b3d59ed28db1aa

[mboersma]

/lgtm

@Jont828 has been productive and dedicated to CAPZ (and to the sig-cluster-lifecycle universe) for many moons. Congratulations and thank you for stepping up!

[nojnhuh]

+1, thank you @Jont828!
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nojnhuh

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[mboersma]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 3ccfa8d77f581971a8f89a68f07a1b46ac7ecd8e

[nawazkh]

Late to the party, but yay! Keep up the good work!
/lgtm