Bump aasm from 5.0.4 to 5.0.5 (#1957)

Bumps [aasm](https://github.com/aasm/aasm) from 5.0.4 to 5.0.5.
- [Release notes](https://github.com/aasm/aasm/releases)
- [Changelog](https://github.com/aasm/aasm/blob/master/CHANGELOG.md)
- [Commits](aasm/aasm@v5.0.4...v5.0.5)

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

Gemfile.lock

@@ -63,7 +63,7 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    aasm (5.0.4)
+    aasm (5.0.5)
       concurrent-ruby (~> 1.0)
     actioncable (5.0.7.2)
       actionpack (= 5.0.7.2)