Update vmstat to version 2.3.0

What does this MR do?

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/26114

Are there points in the code the reviewer needs to double check?

No

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together