Bump uk_planning_scraper ref

Gemfile

@@ -2,5 +2,5 @@ source "https://rubygems.org"
 
 ruby '2.3.1'
 
-gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/', :ref => 'ddc81dd'
+gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/', :ref => '163e471'
 gem 'scraperwiki', :git => 'https://github.com/openaustralia/scraperwiki-ruby/', :branch => 'morph_defaults'

Gemfile.lock

@@ -1,7 +1,7 @@
 GIT
   remote: https://github.com/adrianshort/uk_planning_scraper/
-  revision: ddc81dd838d16ea6ce679624b2ec6d920a8b0da5
-  ref: ddc81dd
+  revision: 163e471d8320a2ba6737363f91d5dac3c6c7213c
+  ref: 163e471
   specs:
     uk_planning_scraper (0.1.1)
       mechanize (~> 2.7)