Add pkgconfig dirs for all deps under superenv

Fixes Homebrew/homebrew#18367.

Library/Homebrew/superenv.rb

@@ -122,8 +122,8 @@ class << ENV
   end
 
   def determine_pkg_config_path
-    paths  = deps.map{|dep| "#{HOMEBREW_PREFIX}/opt/#{dep}/lib/pkgconfig" }
-    paths += deps.map{|dep| "#{HOMEBREW_PREFIX}/opt/#{dep}/share/pkgconfig" }
+    paths  = all_deps.map{|dep| "#{HOMEBREW_PREFIX}/opt/#{dep}/lib/pkgconfig" }
+    paths += all_deps.map{|dep| "#{HOMEBREW_PREFIX}/opt/#{dep}/share/pkgconfig" }
     paths.to_path_s
   end