Bump rubocop from 1.28.2 to 1.29.0

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.28.2 to 1.29.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.28.2...v1.29.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -63,8 +63,9 @@ GEM
     bindex (0.8.1)
     builder (3.2.4)
     byebug (11.1.3)
-    capybara (3.35.3)
+    capybara (3.37.0)
       addressable
+      matrix
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
       rack (>= 1.6.0)
@@ -141,8 +142,9 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     marcel (1.0.1)
+    matrix (0.4.2)
     method_source (1.0.0)
-    mini_mime (1.1.0)
+    mini_mime (1.1.2)
     mini_portile2 (2.8.0)
     minitest (5.14.4)
     nio4r (2.5.8)
@@ -160,7 +162,7 @@ GEM
     pry-byebug (3.9.0)
       byebug (~> 11.0)
       pry (~> 0.13.0)
-    public_suffix (4.0.6)
+    public_suffix (4.0.7)
     puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
@@ -224,12 +226,12 @@ GEM
       rspec-mocks (~> 3.10)
       rspec-support (~> 3.10)
     rspec-support (3.10.2)
-    rubocop (1.28.2)
+    rubocop (1.29.0)
       parallel (~> 1.10)
       parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
+      rexml (>= 3.2.5, < 4.0)
       rubocop-ast (>= 1.17.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)