Update AUTHORS and CONTRIBUTORS.md

[greschd]

Closes #610, closes #611

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.31%. Comparing base (8fcae81) to head (16fafbc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #618   +/-   ##
=======================================
  Coverage   93.31%   93.31%           
=======================================
  Files          84       84           
  Lines        4445     4445           
=======================================
  Hits         4148     4148           
  Misses        297      297           

Flag	Coverage Δ
python-3.10	93.18% <ø> (ø)
python-3.11	93.22% <ø> (ø)
python-3.12	93.22% <ø> (ø)
server-242	93.00% <ø> (ø)
server-latest	93.31% <ø> (ø)

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