Update ghcr.io/nginx/dependencies/nginx-ubi:ubi9 Docker digest to 68964f6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/nginx/dependencies/nginx-ubi	stage	digest	7ec723b -> 68964f6

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Configuration

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.09%. Comparing base (64a5b2c) to head (b9210c3).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4224      +/-   ##
==========================================
- Coverage   86.10%   86.09%   -0.01%     
==========================================
  Files         131      131              
  Lines       14162    14162              
  Branches       35       35              
==========================================
- Hits        12194    12193       -1     
+ Misses       1766     1765       -1     
- Partials      202      204       +2     

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