Bump rubocop-rspec from 2.16.0 to 2.18.0 in /dependencies

Bumps [rubocop-rspec](https://github.com/rubocop/rubocop-rspec) from 2.16.0 to 2.18.0.
- [Release notes](https://github.com/rubocop/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rspec@v2.16.0...v2.18.0)

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

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

dependencies/Gemfile

@@ -10,4 +10,4 @@ gem "rubocop-minitest", "~> 0.26.0"
 gem "rubocop-performance", "~>1.15.2"
 gem "rubocop-rails", "~> 2.17"
 gem "rubocop-rake", "~> 0.6.0"
-gem "rubocop-rspec", "~> 2.16.0"
+gem "rubocop-rspec", "~> 2.18.0"

dependencies/Gemfile.lock

@@ -31,6 +31,8 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.24.1)
       parser (>= 3.1.1.0)
+    rubocop-capybara (2.17.0)
+      rubocop (~> 1.41)
     rubocop-github (0.20.0)
       rubocop (>= 1.37)
       rubocop-performance (>= 1.15)
@@ -46,8 +48,9 @@ GEM
       rubocop (>= 1.33.0, < 2.0)
     rubocop-rake (0.6.0)
       rubocop (~> 1.0)
-    rubocop-rspec (2.16.0)
+    rubocop-rspec (2.18.0)
       rubocop (~> 1.33)
+      rubocop-capybara
     ruby-progressbar (1.11.0)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
@@ -63,7 +66,7 @@ DEPENDENCIES
   rubocop-performance (~> 1.15.2)
   rubocop-rails (~> 2.17)
   rubocop-rake (~> 0.6.0)
-  rubocop-rspec (~> 2.16.0)
+  rubocop-rspec (~> 2.18.0)
 
 BUNDLED WITH
   2.3.5