[FIX] std::is_trivial is deprecated (sdsl)

[eseiler]

It's not included via -isystem anymore, so we see the deprecation warning.

Note that we could add a #pragma GCC system_header to mark it as system header.
This is also accepted by Clang.

[seqan-actions]

Documentation preview available at https://docs.seqan.de/preview/seqan/seqan3/3340

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.11%. Comparing base (f9e5403) to head (50cd9ce).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3340   +/-   ##
=======================================
  Coverage   98.11%   98.11%           
=======================================
  Files         270      270           
  Lines       11913    11913           
  Branches      103      103           
=======================================
  Hits        11689    11689           
  Misses        224      224           

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[SGSSGene]

nice!