Fluentd v1.16.8

Full Changelog: v1.16.7...v1.16.8

This version has a critical bug about Windows Service. Do not use this version.
(#4955)

Bug Fix

• winsvc: Stop the service when the supervisor is dead
  #4942
• formatter_csv: Fix memory leak
  #4920

Misc

• Add fiddle as dependency gem for Ruby 3.5 on Windows
  #4919
• Refactoring code
  #4921
  #4922
  #4926
  #4943
• CI improvemnts
  #4821
  #4850
  #4851
  #4862
  #4915
  #4923
  #4925
  #4927

Contributors to this release (Alphabetical order)

• Daijiro Fukuda
• Kentaro Hayashi
• Shizuo Fujita
• Takuro Ashie