chore(deps): update github.com/charmbracelet/x/exp/golden digest to b72a9a9 in go.mod

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/charmbracelet/x/exp/golden	indirect	digest	33beb0e → b72a9a9

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.55%. Comparing base (5b0675a) to head (f70b38a).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #571   +/-   ##
=======================================
  Coverage   71.55%   71.55%           
=======================================
  Files          67       67           
  Lines        3537     3537           
=======================================
  Hits         2531     2531           
  Misses        863      863           
  Partials      143      143           

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