chore: update to nix 0.30

[tottoto]

Updates to nix 0.30.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.04%. Comparing base (709447f) to head (dfc66ad).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2589   +/-   ##
=======================================
  Coverage   72.04%   72.04%           
=======================================
  Files          66       66           
  Lines       36953    36953           
=======================================
  Hits        26623    26623           
  Misses      10330    10330           

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