chore: indicate compatibility with new v4 major

[danielroe]

trafficstars

With Nuxt 4 on the horizon, this updates the module compatibility definition to allow it to be installed on Nuxt v4. (Otherwise Nuxt will indicate the module might not be compatible.)

When Nuxt v4 comes out then you might decide or need to make breaking changes in this module and release a new major, but hopefully the migration should be smoother. 🙏

👉 You can follow this and other changes in https://github.com/nuxt/nuxt/issues/27613 - please feel free to provide feedback as well!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 42.42%. Comparing base (69ec9f4) to head (e88cd84). Report is 6 commits behind head on main.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #74      +/-   ##
==========================================
+ Coverage   41.82%   42.42%   +0.60%     
==========================================
  Files          15       15              
  Lines         428      429       +1     
  Branches       32       28       -4     
==========================================
+ Hits          179      182       +3     
+ Misses        249      247       -2     

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