Bump rake from 12.3.3 to 13.0.6 (#172)

Bumps [rake](https://github.com/ruby/rake) from 12.3.3 to 13.0.6.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v12.3.3...v13.0.6)

---
updated-dependencies:
- dependency-name: rake
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -3,6 +3,6 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in retest.gemspec
 gemspec
 
-gem "rake", "~> 12.0"
+gem "rake", "~> 13.0"
 gem "minitest", "~> 5.0"
 gem "byebug"

Gemfile.lock

@@ -15,7 +15,7 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     minitest (5.15.0)
-    rake (12.3.3)
+    rake (13.0.6)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -28,7 +28,7 @@ PLATFORMS
 DEPENDENCIES
   byebug
   minitest (~> 5.0)
-  rake (~> 12.0)
+  rake (~> 13.0)
   retest!
 
 BUNDLED WITH