Description of your changes:
Follow up on https://github.com/kubeflow/pipelines/pull/11372, kfp-pipeline-spec is currently a blocker for kfp to truly support Python 3.13. Once this is release, we'll update its version in KFP SDK and do a patch release.
Needs approval from an approver in each of these files:
- ~~[api/OWNERS](https://github.com/kubeflow/pipelines/blob/master/api/OWNERS)~~ [HumairAK]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Description of your changes: Follow up on https://github.com/kubeflow/pipelines/pull/11372, kfp-pipeline-spec is currently a blocker for kfp to truly support Python 3.13. Once this is release, we'll update its version in KFP SDK and do a patch release.
Checklist: