[release-20.0] CI: Fix for xtrabackup install failures (#16329)

[vitess-bot]

Description

This is a backport of #16329

[vitess-bot]

Review Checklist

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General

• Ensure that the Pull Request has a descriptive title.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.64%. Comparing base (6096e1f) to head (ba1fa86).

Additional details and impacted files

@@               Coverage Diff                @@
##           release-20.0   #16333      +/-   ##
================================================
- Coverage         68.65%   68.64%   -0.01%     
================================================
  Files              1541     1541              
  Lines            197830   197830              
================================================
- Hits             135821   135808      -13     
- Misses            62009    62022      +13     

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