Bump rubocop-rspec from 2.18.0 to 2.18.1

Bumps [rubocop-rspec](https://github.com/rubocop/rubocop-rspec) from 2.18.0 to 2.18.1.
- [Release notes](https://github.com/rubocop/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop/rubocop-rspec/compare/v2.18.0...v2.18.1)

---
updated-dependencies:
- dependency-name: rubocop-rspec
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -369,7 +369,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rbtree (0.4.6)
-    regexp_parser (2.6.1)
+    regexp_parser (2.6.2)
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
       http-cookie (>= 1.0.2, < 2.0)
@@ -424,9 +424,9 @@ GEM
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.33.0, < 2.0)
-    rubocop-rspec (2.18.0)
+    rubocop-rspec (2.18.1)
       rubocop (~> 1.33)
-      rubocop-capybara
+      rubocop-capybara (~> 2.17)
     ruby-progressbar (1.11.0)
     ruby-vips (2.1.4)
       ffi (~> 1.12)