[release-1.20] bump to trigger point release

[dprotaso]

Bump serving to trigger release to rebuild with 1.25.7

Part of #16402

[knative-prow]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.07%. Comparing base (5466148) to head (cf727a9).
⚠️ Report is 1 commits behind head on release-1.20.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.20   #16407      +/-   ##
================================================
+ Coverage         80.01%   80.07%   +0.06%     
================================================
  Files               214      214              
  Lines             13318    13318              
================================================
+ Hits              10656    10665       +9     
+ Misses             2304     2295       -9     
  Partials            358      358              

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[dprotaso]

/assign @linkvt

[linkvt]

/lgtm