Bump rubocop from 1.48.1 to 1.52.1

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.48.1 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/v1.48.1...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>

Gemfile

@@ -6,7 +6,7 @@ gem 'minitest-ci', '~> 3.4'
 gem 'minitest-reporters', '~> 1.3'
 gem 'rake', '~> 13.0'
 gem 'rake-compiler', '~> 1.2'
-gem 'rubocop', '1.48.1'
+gem 'rubocop', '1.52.1'
 gem 'rubocop-minitest', '0.31.0'
 gem 'rubocop-packaging', '0.5.2'
 gem 'rubocop-performance', '1.18.0'

Gemfile.lock

@@ -19,22 +19,24 @@ GEM
       minitest (>= 5.0)
       ruby-progressbar
     parallel (1.23.0)
-    parser (3.2.2.1)
+    parser (3.2.2.3)
       ast (~> 2.4.1)
+      racc
+    racc (1.7.1)
     rainbow (3.1.1)
     rake (13.0.6)
     rake-compiler (1.2.3)
       rake
-    regexp_parser (2.8.0)
+    regexp_parser (2.8.1)
     rexml (3.2.5)
-    rubocop (1.48.1)
+    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 (>= 1.26.0, < 2.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.29.0)
@@ -62,7 +64,7 @@ DEPENDENCIES
   minitest-reporters (~> 1.3)
   rake (~> 13.0)
   rake-compiler (~> 1.2)
-  rubocop (= 1.48.1)
+  rubocop (= 1.52.1)
   rubocop-minitest (= 0.31.0)
   rubocop-packaging (= 0.5.2)
   rubocop-performance (= 1.18.0)