Update dependency @types/loader-utils to v3

[iconduit-renovate]

This PR contains the following updates:

Package	Type	Update	Change
@types/loader-utils (source)	devDependencies	major	^2.0.6 -> ^3.0.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (f353696) to head (b0f9d0c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #13   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines           71        71           
  Branches        14        14           
=========================================
  Hits            71        71           

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