Update optimist requirement from >= 3.0, < 3.2 to >= 3.0, < 3.3

Updates the requirements on [optimist](https://github.com/ManageIQ/optimist) to permit the latest version.
- [Changelog](https://github.com/ManageIQ/optimist/blob/master/CHANGELOG.md)
- [Commits](ManageIQ/optimist@v3.0.0...v3.2.0)

---
updated-dependencies:
- dependency-name: optimist
  dependency-type: direct:production
...

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

aws_security_viz.gemspec

@@ -28,7 +28,7 @@ Gem::Specification.new do |s|
   end
   s.add_runtime_dependency 'rexml', '~> 3.2', '>= 3.2.2'
   s.add_runtime_dependency 'graphviz', '~> 1.1', '>= 1.1.0'
-  s.add_runtime_dependency 'optimist', '>= 3.0', '< 3.2'
+  s.add_runtime_dependency 'optimist', '>= 3.0', '< 3.3'
   s.add_runtime_dependency 'organic_hash', '~> 1.0', '>= 1.0.2'
   s.add_runtime_dependency 'rgl', '~> 0.5.3'
   s.add_runtime_dependency 'webrick', '~> 1.8.1'