1.29 release notes missing from menu

[david-in-perth]

/kind bug

Questions 1-3 are not applicable

4. What commands did you run? What is the simplest way to reproduce this issue?

Load https://kops.sigs.k8s.io/ and click on Releases in the top menu.

5. What happened after the commands executed?

• The Release Notes page for kOps 1.28 is loaded (URL: https://kops.sigs.k8s.io/releases/1.28-notes/)
• The navigation menu on the left links to release notes for kOps 1.28 and earlier releases, but not for 1.29

Note: The release notes for 1.29 can be accessed directly by editing the URL (setting it to https://kops.sigs.k8s.io/releases/1.29-notes/), but are not linked to.

6. What did you expect to happen?

Now that kOps 1.29.0 has been released, I expect the following:

• The Release Notes for the current kOps release (1.29) should load (URL https://kops.sigs.k8s.io/releases/1.29-notes/).
• The navigation menu on the left of the page (on all release notes pages) should include a link to the kOps 1.29 release notes.

Questions 7 & 8 are not applicable

9. Anything else do we need to know?

This already happened with the previous kOps minor version release (1.28), as described in #16274 (logged and fixed in Jan 2024, several months after the 1.28.0 release).

[david-in-perth]

I would copy what @yurrriq did last time in #16275 and submit a pull request, since it appears to be as simple as adding an extra entry to a list in a YAML file, but I don't have time to look into creating an LFX account and signing the CLA right now.

[kundan2707]

/kind documentation

[kundan2707]

/assign