easyeffects: add dependencies forgotten in 6.0.3 bump

loudness is back https://github.com/wwmm/easyeffects/blob/v6.0.2/CHANGELOG.md

+2
+2
pkgs/applications/audio/easyeffects/default.nix
··· 16 16 , lilv 17 17 , lsp-plugins 18 18 , lv2 19 + , mda_lv2 19 20 , meson 20 21 , ninja 21 22 , nlohmann_json ··· 83 84 lv2Plugins = [ 84 85 calf # limiter, compressor exciter, bass enhancer and others 85 86 lsp-plugins # delay 87 + mda_lv2 # loudness 86 88 ]; 87 89 ladspaPlugins = [ 88 90 rubberband # pitch shifting