chore: Update renovate bump reviewers

[ChristophWurst]

Ref https://github.com/nextcloud/groupware/blob/8f662c09e9c6784ae297e0b8186eac961862b6f2/README.md.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 23.47%. Comparing base (cba2248) to head (f7b0a99).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6482   +/-   ##
=========================================
  Coverage     23.47%   23.47%           
  Complexity      454      454           
=========================================
  Files           247      247           
  Lines         11710    11710           
  Branches       2223     2224    +1     
=========================================
  Hits           2749     2749           
  Misses         8641     8641           
  Partials        320      320           

Flag	Coverage Δ
javascript	15.05% <ø> (ø)
php	59.42% <ø> (ø)

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