From the screenshot below shows that the supported Kubernetes version is up until 1.15 and the latest version now is 1.18.

May I know does this Python API Client library keep up-to-date with the Kubernetes version? Is there any drawback of using this API client library with Kubernetes version 1.18?
Yes this client is lagging behind. We are catching up and doing the 12.0.0 release https://github.com/kubernetes-client/python/issues/1052
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A proposal about cutting the following releases is in https://github.com/kubernetes-client/python/issues/1242.
/remove-lifecycle stale
Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
If this issue is safe to close now please do so with /close.
Send feedback to sig-testing, kubernetes/test-infra and/or fejta.
/lifecycle stale
Most helpful comment
Yes this client is lagging behind. We are catching up and doing the 12.0.0 release https://github.com/kubernetes-client/python/issues/1052