fix(nix): refresh npmDepsHash to the lockfile main actually has

The value dated to v1.6.0 on 2026-07-05; package-lock.json moved ten times
after that, so `nix build` had been refusing the mismatch ever since. The
replacement is what the new check computed from the current lockfile:

  recorded  sha256-IZypOLWlDShIjCKWxlJcrdtIkMu0P/DuXaq4c0HW3FY=
  expected  sha256-SggSPoDnKzmvgXpIGP11y6h390SkoZszeMjFTaokRjQ=

#136 carried sha256-cb8loUzQs4fz3um0xbYgtjQdcRZh/Ptk2YPgv3FHP/s=, computed
from main as it stood on 2026-07-19 — stale for the same reason, which is
why merging it would not have fixed anything.

Author: EtienneLescot

nix/package.nix

@@ -33,7 +33,7 @@ buildNpmPackage {
       );
     };
 
-  npmDepsHash = "sha256-IZypOLWlDShIjCKWxlJcrdtIkMu0P/DuXaq4c0HW3FY=";
+  npmDepsHash = "sha256-SggSPoDnKzmvgXpIGP11y6h390SkoZszeMjFTaokRjQ=";
 
   env.ELECTRON_SKIP_BINARY_DOWNLOAD = "1";