ci: bump ubuntu to 24.04

[zhangzujian]

Pull Request

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What type of this PR

Examples of user facing changes:

• Features
• Bug fixes
• Docs
• Tests

Which issue(s) this PR fixes

Fixes IPv6/DualStack installation failure in github actions.

ip6tables unknown option --set-xmark

[gemini-code-assist]

Hello @zhangzujian, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request updates the base Ubuntu version used in the CI environment to 24.04. The primary motivation is to address an issue where IPv6/DualStack installations were failing in GitHub Actions due to an ip6tables error related to an unknown option. This upgrade should resolve the compatibility issue and ensure smoother CI runs for projects relying on IPv6 or dual-stack configurations.

Highlights

• CI Upgrade: The base Ubuntu version in the CI environment has been bumped from an older version to 24.04.
• IPv6/DualStack Fix: This change resolves a failure in IPv6/DualStack installations within GitHub Actions, specifically addressing an ip6tables error.

Changelog

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[gemini-code-assist]

Code Review

The pull request updates the Ubuntu version used in the CI environment to 24.04. This should address the IPv6/DualStack installation failures in GitHub Actions. The change appears straightforward.

Merge Readiness

The pull request seems ready to be merged, as it directly addresses a known issue and the changes are minimal. I am unable to directly approve the pull request, and other reviewers should review and approve this code before merging.