fix ci

[zhangzujian]

• Make sure you have followed Kube-OVN Code Style.

What type of this PR

• CI

Which issue(s) this PR fixes:

Fixes #(issue-number)

WHAT

🤖 Generated by Copilot at 6c7728d

This pull request updates the GitHub workflows for building and testing Kube-OVN to support the new release-1.12 branch. It fixes a debug image push bug in the build-kube-ovn-base.yaml file and adds more installation and end-to-end test cases in the scheduled-e2e.yaml file.

🤖 Generated by Copilot at 6c7728d

Oh we're the crew of the Kube-OVN
And we work on the code all day
We test the branch of release-1.12
With IPv4, 6, and dual-stack, hey!

HOW

🤖 Generated by Copilot at 6c7728d

• Add release-1.12 branch to the matrix of branches for various jobs in the scheduled-e2e workflow (link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link, link). This enables testing the latest version of Kube-OVN on different kind cluster configurations, such as IPv4, IPv6, dual-stack, SSL, and IPvlan.