Display version fixing backup running concurrently

What does this MR do?

!97218 (merged) fixes the parallel backup running issue. Added until which version the warning applies

gitlab on  docs-commands-display-deletion-error via  via 🐍 v3.10.8 via 💎 v2.6.10
❯ git tag --contains 193741e4ff3e386eefabe7c8f3c88499457705b5
v15.5.0-ee
v15.5.0-rc42-ee
v15.5.0-rc43-ee
v15.5.1-ee
v15.5.2-ee
v15.5.3-ee
v15.5.4-ee

Related issues

#362593 (closed)

Author's checklist

• Optional. Consider taking the GitLab Technical Writing Fundamentals course.
• Follow the:
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If you are a GitLab team member and only adding documentation, do not add any of the following labels:

• ~"frontend"
• ~"backend"
• ~"type::bug"
• ~"database"

These labels cause the MR to be added to code verification QA issues.

Reviewer's checklist

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If you aren't sure which tech writer to ask, use roulette or ask in the #docs Slack channel.

• If the content requires it, ensure the information is reviewed by a subject matter expert.
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