Bump rake from 12.3.2 to 13.0.1 (#288)

Bumps [rake](https://github.com/ruby/rake) from 12.3.2 to 13.0.1.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v12.3.2...v13.0.1)

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

Gemfile.lock

@@ -45,7 +45,7 @@ GEM
       sawyer (~> 0.8.0, >= 0.5.3)
     open4 (1.3.4)
     public_suffix (3.0.3)
-    rake (12.3.2)
+    rake (13.0.1)
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)