Bump rake from 13.0.6 to 13.1.0

Bumps [rake](https://github.com/ruby/rake) from 13.0.6 to 13.1.0.
- [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

@@ -16,7 +16,7 @@ GEM
     pry-byebug (3.3.0)
       byebug (~> 8.0)
       pry (~> 0.10)
-    rake (13.0.6)
+    rake (13.1.0)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -35,7 +35,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bundler (~> 1.11)
   exonio!
   pry-byebug (~> 3.3.0)
   rake (~> 13.0)