dictd-dbs: add dontUnpack = true

Fixes the "variable $src or $srcs should point to the source" error.

+1
+1
pkgs/servers/dict/dictd-db-collector.nix
··· 78 79 buildInputs = [ dict ]; 80 81 inherit installPhase; 82 })
··· 78 79 buildInputs = [ dict ]; 80 81 + dontUnpack = true; 82 inherit installPhase; 83 })