Bump rake from 12.3.0 to 12.3.2

Bumps [rake](https://github.com/ruby/rake) from 12.3.0 to 12.3.2.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v12.3.0...v12.3.2)

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

Gemfile.lock

@@ -18,7 +18,7 @@ GEM
     diff-lcs (1.3)
     docile (1.1.5)
     json (2.1.0)
-    rake (12.3.0)
+    rake (12.3.2)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)