Update version to 1.60.0

[otelbot]

Update version to 1.60.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.22%. Comparing base (c2d6229) to head (8465fa4).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8054   +/-   ##
=========================================
  Coverage     90.21%   90.22%           
- Complexity     7600     7601    +1     
=========================================
  Files           838      838           
  Lines         22806    22806           
  Branches       2274     2274           
=========================================
+ Hits          20575    20576    +1     
  Misses         1519     1519           
+ Partials        712      711    -1     

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