[release/v1.59.x] Prepare release 1.59.0

[otelbot]

Prepare release 1.59.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.22%. Comparing base (c2d6229) to head (78a345b).
⚠️ Report is 1 commits behind head on release/v1.59.x.

Additional details and impacted files

@@                Coverage Diff                 @@
##             release/v1.59.x    #8055   +/-   ##
==================================================
  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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