Bump rubocop from 1.24.1 to 1.34.1

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.24.1 to 1.34.1.
- [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/v1.24.1...v1.34.1)

---
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', '1.24.1'
+gem 'rubocop', '1.34.1'
 gem 'rubocop-minitest', '0.21.0'
 gem 'rubocop-packaging', '0.5.1'
 gem 'rubocop-performance', '1.14.2'

Gemfile.lock

@@ -9,6 +9,7 @@ GEM
     ansi (1.5.0)
     ast (2.4.2)
     builder (3.2.4)
+    json (2.6.2)
     minitest (5.16.2)
     minitest-ci (3.4.0)
       minitest (>= 5.0.6)
@@ -26,13 +27,14 @@ GEM
       rake
     regexp_parser (2.5.0)
     rexml (3.2.5)
-    rubocop (1.24.1)
+    rubocop (1.34.1)
+      json (~> 2.3)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.1.2.1)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.15.1, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.20.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
     rubocop-ast (1.21.0)
@@ -59,7 +61,7 @@ DEPENDENCIES
   minitest-reporters (~> 1.3)
   rake (~> 13.0)
   rake-compiler (~> 1.2)
-  rubocop (= 1.24.1)
+  rubocop (= 1.34.1)
   rubocop-minitest (= 0.21.0)
   rubocop-packaging (= 0.5.1)
   rubocop-performance (= 1.14.2)