Bump rake and http gem versions

uk_planning_scraper.gemspec

@@ -25,7 +25,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", "~> 2.0"
-  spec.add_development_dependency "rake", "~> 12.3.3"
+  spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", "~> 3.8"
   spec.add_development_dependency "simplecov", "~> 0.16"
   spec.add_development_dependency "vcr", "~> 4.0"
@@ -33,5 +33,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "pry", "~> 0.11"
 
   spec.add_runtime_dependency "mechanize", "~> 2.7"
-  spec.add_runtime_dependency "http", "~> 3.3"
+  spec.add_runtime_dependency "http", "~> 5.0"
 end