Update Velero to 1.5.2

[xrstf]

What this PR does / why we need it:
Nothing really special to see here. I tested 1.5.2 on our dev cluster and it seems to work just fine. The upgrade notes do not mention anything special: https://velero.io/docs/v1.5/upgrade-to-1.5/

Does this PR introduce a user-facing change?:

Update Velero to 1.5.2

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: xrstf

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[xrstf]

/override pre-kubermatic-spellcheck

The typos found by this job are from upstream.

[kubermatic-bot]

@xrstf: Overrode contexts on behalf of xrstf: pre-kubermatic-spellcheck

In response to this:

/override pre-kubermatic-spellcheck

The typos found by this job are from upstream.

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[xrstf]

vmware-tanzu/velero#3063 should fix the typos in future versions.

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 4096d7b1cd3c7c1e2582f035a0567c28d4c5ef17