Bump rake from 12.3.1 to 12.3.2

Bumps [rake](https://github.com/ruby/rake) from 12.3.1 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@v12.3.1...v12.3.2)

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

Gemfile.lock

@@ -72,7 +72,7 @@ GEM
     racksh (1.0.0)
       rack (>= 1.0)
       rack-test (>= 0.5)
-    rake (12.3.1)
+    rake (12.3.2)
     redcarpet (3.4.0)
     regexp_parser (1.3.0)
     rspec (3.8.0)