Bump thor from 1.3.2 to 1.4.0 (heroku#1622)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -47,7 +47,7 @@ GEM
     rspec-retry (0.6.2)
       rspec-core (> 3.3)
     rspec-support (3.13.4)
-    thor (1.3.2)
+    thor (1.4.0)
     threaded (0.0.4)
     toml-rb (4.0.0)
       citrus (~> 3.0, > 3.0)