Update aws-sdk-ec2 requirement from >= 1.65, < 1.199 to >= 1.65, < 1.400

Updates the requirements on [aws-sdk-ec2](https://github.com/aws/aws-sdk-ruby) to permit the latest version.
- [Release notes](https://github.com/aws/aws-sdk-ruby/releases)
- [Changelog](https://github.com/aws/aws-sdk-ruby/blob/version-3/gems/aws-sdk-ec2/CHANGELOG.md)
- [Commits](https://github.com/aws/aws-sdk-ruby/commits)

---
updated-dependencies:
- dependency-name: aws-sdk-ec2
  dependency-type: direct:production
...

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

aws_security_viz.gemspec

@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
   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'
-  s.add_runtime_dependency 'aws-sdk-ec2', '>= 1.65', '< 1.199'
+  s.add_runtime_dependency 'aws-sdk-ec2', '>= 1.65', '< 1.400'
 
   s.required_ruby_version = '>= 3.0.0'
 end