Bump thor from 1.2.2 to 1.3.1

Bumps [thor](https://github.com/rails/thor) from 1.2.2 to 1.3.1.
- [Release notes](https://github.com/rails/thor/releases)
- [Commits](rails/thor@v1.2.2...v1.3.1)

---
updated-dependencies:
- dependency-name: thor
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: middleman-cli
   specs:
     middleman-cli (4.5.1)
-      thor (>= 0.17.0, < 1.3.0)
+      thor (>= 0.17.0, < 1.4.0)
 
 PATH
   remote: middleman-core
@@ -219,7 +219,7 @@ GEM
     sys-uname (1.2.3)
       ffi (~> 1.1)
     temple (0.8.2)
-    thor (1.2.2)
+    thor (1.3.1)
     tilt (2.0.11)
     timers (4.0.4)
       hitimes

middleman-cli/middleman-cli.gemspec

@@ -20,5 +20,5 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 2.5.0'
 
   # CLI
-  s.add_dependency('thor', ['>= 0.17.0', '< 1.3.0'])
+  s.add_dependency('thor', '>= 0.17.0', '< 1.4.0')
 end