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...v13.0.3)

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -29,7 +29,7 @@ GEM
     rack-protection (2.0.5)
       rack
     rainbow (3.0.0)
-    rake (10.5.0)
+    rake (13.0.3)
     redis (4.1.0)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
@@ -73,7 +73,7 @@ DEPENDENCIES
   bundler (>= 1.17)
   emittance-sidekiq!
   pry
-  rake (~> 10.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
   rubocop
   simplecov

emittance-sidekiq.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'bundler', '>= 1.17'
   spec.add_development_dependency 'pry'
-  spec.add_development_dependency 'rake', '~> 10.0'
+  spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rubocop'
   spec.add_development_dependency 'simplecov'