Bump thor from 1.3.2 to 1.4.0

Bumps [thor](https://github.com/rails/thor) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/rails/thor/releases)
- [Commits](rails/thor@v1.3.2...v1.4.0)

---
updated-dependencies:
- dependency-name: thor
  dependency-version: 1.4.0
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -742,7 +742,7 @@ GEM
       sprockets (>= 3.0.0)
     statsd-ruby (1.5.0)
     stringio (3.1.1)
-    thor (1.3.2)
+    thor (1.4.0)
     tilt (2.4.0)
     timeout (0.4.3)
     ttfunk (1.7.0)