Bump rubocop from 0.57.2 to 0.68.1

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.57.2 to 0.68.1.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop/compare/v0.57.2...v0.68.1)

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

Gemfile.lock

@@ -444,7 +444,7 @@ GEM
     immigrant (0.3.6)
       activerecord (>= 3.0)
     ipaddress (0.8.3)
-    jaro_winkler (1.5.1)
+    jaro_winkler (1.5.4)
     journey (1.0.4)
     jquery-migrate-rails (1.2.1)
     jquery-rails (3.0.4)
@@ -510,10 +510,10 @@ GEM
       activesupport (>= 3.0.0)
       cocaine (~> 0.5.0)
       mime-types
-    parallel (1.11.2)
+    parallel (1.18.0)
     paranoia (1.3.4)
       activerecord (~> 3.1)
-    parser (2.5.1.0)
+    parser (2.6.5.0)
       ast (~> 2.4.0)
     paypal-sdk-core (0.2.10)
       multi_json (~> 1.0)
@@ -525,7 +525,6 @@ GEM
       activerecord (~> 3.0)
     polyglot (0.3.5)
     power_assert (1.1.5)
-    powerpack (0.1.1)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
@@ -622,14 +621,13 @@ GEM
     rspec-retry (0.6.1)
       rspec-core (> 3.3)
     rspec-support (3.9.0)
-    rubocop (0.57.2)
+    rubocop (0.68.1)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
-      parser (>= 2.5)
-      powerpack (~> 0.1)
+      parser (>= 2.5, != 2.5.1.1)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
+      unicode-display_width (>= 1.4.0, < 1.6)
     ruby-ole (1.2.12.1)
     ruby-progressbar (1.10.1)
     ruby-rc4 (0.1.5)
@@ -690,7 +688,7 @@ GEM
     tzinfo (0.3.55)
     uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
-    unicode-display_width (1.3.2)
+    unicode-display_width (1.5.0)
     unicorn (5.5.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)