Bump thor from 1.3.1 to 1.4.0

Bumps [thor](https://github.com/rails/thor) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/rails/thor/releases)
- [Commits](rails/thor@v1.3.1...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

@@ -121,7 +121,7 @@ GEM
     securerandom (0.4.0)
     simpleidn (0.2.3)
     stringio (3.1.1)
-    thor (1.3.1)
+    thor (1.4.0)
     timeout (0.4.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)