docs: add brosaplanella as a contributor for code

[allcontributors]

Adds @brosaplanella as a contributor for code.

This was requested by BradyPlanden in this comment

[skip ci]

[BradyPlanden]

This is currently blocked until the all-contributors modifications are fixed. I'll try to find time to sort this, but if anyone else wants to take a look at why it's breaking the funding entries that would be great.

The most up to date version is in #293.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.80%. Comparing base (02bd80a) to head (43872db).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #292   +/-   ##
========================================
  Coverage    95.80%   95.80%           
========================================
  Files           38       38           
  Lines         2048     2048           
========================================
  Hits          1962     1962           
  Misses          86       86           

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