chore(deps): update dependency polly.core to 8.6.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Polly.Core	8.6.5 → 8.6.6

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Release Notes

App-vNext/Polly (Polly.Core)

v8.6.6

Compare Source

• Fix ScheduledTaskExecutor deadlock when TrySetResult runs continuations inline by @​crnhrv in #​2953

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.28%. Comparing base (39ecf0f) to head (fb4c30d).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #85   +/-   ##
=======================================
  Coverage   90.28%   90.28%           
=======================================
  Files          36       36           
  Lines        1091     1091           
  Branches      123      123           
=======================================
  Hits          985      985           
  Misses         68       68           
  Partials       38       38           

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