Properly handle libicu in Meson

[kelson42]

• Fix handling of libicu 76+
• Simplify a bit the handling of all deps

[kelson42]

@veloman-yunkan Sorry, I was not over

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 56.18%. Comparing base (8ef511b) to head (65fb47b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1015      +/-   ##
==========================================
- Coverage   58.13%   56.18%   -1.96%     
==========================================
  Files         101      101              
  Lines        5384     4989     -395     
  Branches     2197     2170      -27     
==========================================
- Hits         3130     2803     -327     
+ Misses        795      739      -56     
+ Partials     1459     1447      -12     

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