Update desktop installer contact to Oliver Smith

[mclemenceau]

Update Ubuntu Desktop Installer owner to Oliver Smith.

[webteam-app]

mclemenceau is not a collaborator of the repo

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.49%. Comparing base (9a6e5ec) to head (44047d4).
Report is 32 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1375      +/-   ##
==========================================
- Coverage   71.86%   70.49%   -1.38%     
==========================================
  Files          14       15       +1     
  Lines        1102     1210     +108     
==========================================
+ Hits          792      853      +61     
- Misses        310      357      +47     

Flag	Coverage Δ
python	70.49% <ø> (-1.38%)	⬇️

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