fix(deps): update dependency io.projectreactor:reactor-core to v3.6.9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.projectreactor:reactor-core	3.6.8 -> 3.6.9

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[github-actions]

Code Coverage

Total Project Coverage	85.18%	✅

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.80%. Comparing base (fba8703) to head (2fd665b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #556   +/-   ##
=======================================
  Coverage   81.80%   81.80%           
=======================================
  Files          80       80           
  Lines        2308     2308           
  Branches      148      148           
=======================================
  Hits         1888     1888           
  Misses        321      321           
  Partials       99       99           

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