[2.25] Update KUBESPRAY_VERSION in galaxy.yml to v2.25.2 and Update Readme.md to v2.25.1

[robertvolkmann]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Which issue(s) this PR fixes: Update KUBESPRAY_VERSION in galaxy.yml to v2.25.2 and Update Readme.md to v2.25.1 Similar to: #11551

Special notes for your reviewer: None

Does this PR introduce a user-facing change?:

"NONE"

[k8s-ci-robot]

Hi @robertvolkmann. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes-sigs/prow](https://github.com/kubernetes-sigs/prow/issues/new?title=Prow%20issue:) repository.

[VannTen]

/approve /hold (until 2.25.1 is out)

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: robertvolkmann, tico88612, VannTen

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes-sigs/kubespray/blob/release-2.25/OWNERS)~~ [VannTen] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[yankay]

Thanks @robertvolkmann @VannTen /lgtm

[tico88612]

2.25.1 Released.

/unhold