Update dependency wdm to "~> 0.2.0"

Author: renovate[bot]

Gemfile

@@ -38,7 +38,7 @@ gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 gem 'pygments.rb', '~> 2.4.0'
 
 # Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.0" if Gem.win_platform?
+gem "wdm", "~> 0.2.0" if Gem.win_platform?
 
 gem "html-proofer"
 gem "domainatrix"