fix: refresh KEGG pathway table — BgRatio drift (9376 → 9377)

KEGG pathway database added one gene to the human background since the
last regeneration; CI's reproducibility check (`dev/compare_tables.R`)
fails with "BgRatio mismatch ... reference=238/9376, generated=239/9377"
because the tracked snapshot still encodes the older background.

Same kind of fix as PR #6 (Mar 22): re-snapshot the table to match
what the live database now produces. RichFactor / FoldEnrichment /
p-values shift slightly downstream of the new denominator; the
underlying pathway hits and ranking are unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Ekin-Kahraman