Update TEAM.md

[maxrjones]

Adding myself, since I joined the team last summer.

TODO:

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• New/modified features documented in docs/user-guide/*.md
• Changes documented as a new file in changes/
• GitHub Actions have all passed
• Test coverage is 100% (Codecov passes)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.91%. Comparing base (00c1463) to head (4694a80).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3879   +/-   ##
=======================================
  Coverage   92.91%   92.91%           
=======================================
  Files          86       86           
  Lines       10715    10715           
=======================================
  Hits         9956     9956           
  Misses        759      759           

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