insta: Compile with opt-level = 3

[Turbo87]

see https://insta.rs/docs/quickstart/#optional-faster-runs

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.23%. Comparing base (56e4a55) to head (8809b33).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9978   +/-   ##
=======================================
  Coverage   89.23%   89.23%           
=======================================
  Files         292      292           
  Lines       30409    30409           
=======================================
  Hits        27135    27135           
  Misses       3274     3274           

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