Change version to v1.72.2

[arjan-bal]

RELEASE NOTES: N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.12%. Comparing base (eef8c9c) to head (b32e025).
Report is 1 commits behind head on v1.72.x.

Additional details and impacted files

@@             Coverage Diff             @@
##           v1.72.x    #8357      +/-   ##
===========================================
- Coverage    82.16%   82.12%   -0.04%     
===========================================
  Files          412      412              
  Lines        40396    40396              
===========================================
- Hits         33191    33177      -14     
- Misses        5847     5858      +11     
- Partials      1358     1361       +3     

see 20 files with indirect coverage changes

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