Bump rubocop from 1.50.2 to 1.52.1 (#2864)

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.50.2 to 1.52.1.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop/rubocop/compare/v1.50.2...v1.52.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -24,7 +24,7 @@ gem 'espeak-ruby', '~> 1.1.0' # Text-to-Voice
 gem 'rake', '~> 13.0'
 gem 'otr-activerecord', '~> 2.1', '>= 2.1.2'
 gem 'sqlite3', '~> 1.6', '>= 1.6.1'
-gem 'rubocop', '~> 1.50.2', require: false
+gem 'rubocop', '~> 1.52.1', require: false
 
 # Geolocation support
 group :geoip do

Gemfile.lock

@@ -95,10 +95,11 @@ GEM
     otr-activerecord (2.1.2)
       activerecord (>= 4.0, < 7.1)
       hashie-forbidden_attributes (~> 0.1)
-    parallel (1.22.1)
+    parallel (1.23.0)
     parseconfig (1.1.2)
-    parser (3.2.2.0)
+    parser (3.2.2.3)
       ast (~> 2.4.1)
+      racc
     power_assert (2.0.3)
     pry (0.14.2)
       coderay (~> 1.1)
@@ -146,17 +147,17 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.0)
-    rubocop (1.50.2)
+    rubocop (1.52.1)
       json (~> 2.3)
       parallel (~> 1.10)
-      parser (>= 3.2.0.0)
+      parser (>= 3.2.2.3)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
       rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.28.0)
+    rubocop-ast (1.29.0)
       parser (>= 3.2.1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
@@ -255,7 +256,7 @@ DEPENDENCIES
   rdoc (~> 6.5)
   rest-client (~> 2.1.0)
   rspec (~> 3.12)
-  rubocop (~> 1.50.2)
+  rubocop (~> 1.52.1)
   rubyzip (~> 2.3)
   rushover (~> 0.3.0)
   selenium-webdriver (~> 4.10)