Move @hanyuancheung to Emeritus status

[pellared]

@hanyuancheung is no longer able to fulfil the requirements of an approver. This moves him out of a approver role and into an Emeritus status.

Thank you @hanyuancheung for all the contributions!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.5%. Comparing base (3da26f0) to head (d8ff1a1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #5863   +/-   ##
=====================================
  Coverage   84.5%   84.5%           
=====================================
  Files        272     272           
  Lines      22734   22734           
=====================================
+ Hits       19226   19227    +1     
+ Misses      3165    3164    -1     
  Partials     343     343           

see 2 files with indirect coverage changes