Update rake requirement from ~> 13.0.6 to ~> 13.1.0

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@v13.0.6...v13.1.0)

---
updated-dependencies:
- dependency-name: rake
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -20,7 +20,7 @@ GEM
     parser (3.1.2.1)
       ast (~> 2.4.1)
     rainbow (3.1.1)
-    rake (13.0.6)
+    rake (13.1.0)
     regexp_parser (2.6.0)
     rexml (3.2.5)
     rspec (3.12.0)
@@ -63,7 +63,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 2.3.23)
   codecov (~> 0.6.0)
-  rake (~> 13.0.6)
+  rake (~> 13.1.0)
   rspec (~> 3.12.0)
   rubocop (~> 1.36.0)
   turkish_cities!

turkish_cities.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'bundler', '~> 2.3.23'
   s.add_development_dependency 'codecov', '~> 0.6.0'
-  s.add_development_dependency 'rake', '~> 13.0.6'
+  s.add_development_dependency 'rake', '~> 13.1.0'
   s.add_development_dependency 'rspec', '~> 3.12.0'
   s.add_development_dependency 'rubocop', '~> 1.36.0'