Maintenance: Bump koala from 3.1.0 to 3.2.0

Bumps [koala](https://github.com/arsduo/koala) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/arsduo/koala/releases)
- [Changelog](https://github.com/arsduo/koala/blob/master/changelog.md)
- [Commits](https://github.com/arsduo/koala/compare/v3.1.0...v3.2.0)

Gemfile.lock

@@ -259,7 +259,7 @@ GEM
     json (2.6.2)
     jwt (2.3.0)
     kgio (2.11.4)
-    koala (3.1.0)
+    koala (3.2.0)
       addressable
       faraday (< 2)
       json (>= 1.8)