Update rubocop requirement from ~> 1.55.1 to ~> 1.56.3

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.55.1...v1.56.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -36,6 +36,7 @@ GEM
       async
     async-pool (0.3.12)
       async (>= 1.25)
+    base64 (0.1.1)
     cgi (0.3.6)
     coderay (1.1.3)
     concurrent-ruby (1.2.2)
@@ -138,7 +139,8 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.0)
-    rubocop (1.55.1)
+    rubocop (1.56.3)
+      base64 (~> 0.1.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -194,7 +196,7 @@ DEPENDENCIES
   pry (~> 0.14.1)
   rake (~> 13.0.6)
   rspec (~> 3.12.0)
-  rubocop (~> 1.55.1)
+  rubocop (~> 1.56.3)
   rubyzip
   semantic (~> 1.6.1)
   simplecov (~> 0.22.0)

app_store_connect.gemspec

@@ -35,7 +35,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'pry', '~> 0.14.1'
   spec.add_development_dependency 'rake', '~> 13.0.6'
   spec.add_development_dependency 'rspec', '~> 3.12.0'
-  spec.add_development_dependency 'rubocop', '~> 1.55.1'
+  spec.add_development_dependency 'rubocop', '~> 1.56.3'
   spec.add_development_dependency 'rubyzip'
   spec.add_development_dependency 'semantic', '~> 1.6.1'
   spec.add_development_dependency 'simplecov', '~> 0.22.0'