Update rake requirement from ~> 10.0 to ~> 13.0

Updates the requirements on [rake](https://github.com/ruby/rake) to permit the latest version. - [Release notes](https://github.com/ruby/rake/releases) - [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc) - [Commits](ruby/rake@v10.5.0...v13.0.1) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -132,7 +132,7 @@ GEM
  rake (>= 0.8.7)
  thor (>= 0.20.3, < 2.0)
  rainbow (3.0.0)
- rake (10.5.0)
+ rake (13.0.1)
  rexml (3.2.4)
  rspec (3.9.0)
  rspec-core (~> 3.9.0)
@@ -190,7 +190,7 @@ DEPENDENCIES
  boost-styles!
  bundler (~> 2.0)
  rails (~> 6.0.1)
- rake (~> 10.0)
+ rake (~> 13.0)
  rspec (~> 3.0)
 
 BUNDLED WITH

boost-styles.gemspec

@@ -39,7 +39,7 @@ Gem::Specification.new do |spec|
 
  spec.add_development_dependency 'bundler', '~> 2.0'
  spec.add_development_dependency 'rails', '~> 6.0.1'
- spec.add_development_dependency 'rake', '~> 10.0'
+ spec.add_development_dependency 'rake', '~> 13.0'
  spec.add_development_dependency 'rspec', '~> 3.0'
 
  spec.add_dependency 'haml_lint', '~> 0.33'