build(deps-dev): update rubocop requirement from = 1.75.5 to = 1.75.6

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.

Updates `rubocop` from 1.75.5 to 1.75.6
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.75.5...v1.75.6)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-version: 1.75.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -51,8 +51,8 @@ GEM
     erubi (1.13.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
-    json (2.11.3)
-    language_server-protocol (3.17.0.4)
+    json (2.12.0)
+    language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     logger (1.6.6)
     loofah (2.24.0)
@@ -83,7 +83,7 @@ GEM
     rainbow (3.1.1)
     rake (13.2.1)
     regexp_parser (2.10.0)
-    rubocop (1.75.5)
+    rubocop (1.75.6)
       json (~> 2.3)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.1.0)
@@ -130,7 +130,7 @@ DEPENDENCIES
   minitest (~> 5.25.1)
   mocha (~> 2.7.0)
   rake (~> 13.2.1)
-  rubocop (= 1.75.5)
+  rubocop (= 1.75.6)
   rubocop-github (~> 0.23.0)
 
 BUNDLED WITH

erblint-github.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "mocha", "~> 2.7.0"
   s.add_development_dependency "rake", "~> 13.2.1"
 
-  s.add_development_dependency "rubocop", "= 1.75.5"
+  s.add_development_dependency "rubocop", "= 1.75.6"
   s.add_development_dependency "rubocop-github", "~> 0.23.0"
   s.metadata["rubygems_mfa_required"] = "true"