Nix whitespace

Author: gauravtiwari

solidus_dev_support.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.metadata['changelog_uri'] = 'https://github.com/solidusio/solidus_dev_support/blob/master/CHANGELOG.md'
 
   spec.required_ruby_version = '>= 2.5.0'
- 
+
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   files = Dir.chdir(__dir__) { `git ls-files -z`.split("\x0") }