bundle: update bundle version to 4.18

[iamniting]

Describe what this PR does

Update CSV version to 4.18

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Is the change backward compatible?

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• Kubernetes links that explain why the change is required
• Ceph-CSI spec related changes/catch-up that necessitates this patch
• golang related practices that necessitates this change

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Fixes: #issue_number

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Checklist:

• Commit Message Formatting: Commit titles and messages follow
  guidelines in the developer
  guide.
• Reviewed the developer guide on Submitting a Pull
  Request
• Pending release
  notes
  updated with breaking and/or notable changes for the next major release.
• Documentation has been updated, if necessary.
• Unit tests have been added, if necessary.
• Integration tests have been added, if necessary.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: iamniting, Madhu-1

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