fix(elasticloadbalancingv2): open, dual-stack-without-public-ipv4 ALB allows IPv6 inbound traffic

[clareliguori]

Issue

Closes #32197

Reason for this change

Default generated security group ingress rules for open, dual-stack-without-public-ipv4 ALB does not allow IPv6 traffic. Only a rule for IPv4 ingress traffic is added to the security group rules currently.

Description of changes

Default generated security group ingress rules now have an additional rule that allows IPv6 ingress from anywhere.

Description of how you validated changes

Added a unit test, and updated an existing integration test

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed add Clarification Request to a comment.

[clareliguori]

Exemption Request
I updated the integration test snapshot - the integration test itself did not need to be updated.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.18%. Comparing base (5e835f3) to head (d39abfb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32203   +/-   ##
=======================================
  Coverage   77.18%   77.18%           
=======================================
  Files         105      105           
  Lines        7161     7161           
  Branches     1312     1312           
=======================================
  Hits         5527     5527           
  Misses       1454     1454           
  Partials      180      180           

Flag	Coverage Δ
suite.unit	77.18% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
packages/aws-cdk	77.18% <ø> (ø)

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: d39abfb
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[aws-cdk-automation]

The pull request linter fails with the following errors:

❌ Fixes must contain a change to an integration test file and the resulting snapshot.

PRs must pass status checks before we can provide a meaningful review.

If you would like to request an exemption from the status checks or clarification on feedback, please leave a comment on this PR containing Exemption Request and/or Clarification Request.

✅ A exemption request has been requested. Please wait for a maintainer's review.