chore: Update google.golang.org/grpc digest to acccf8c

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
google.golang.org/grpc	require	digest	93e31b4 → acccf8c

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.84%. Comparing base (befc4eb) to head (2cbc63e).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1567   +/-   ##
=======================================
  Coverage   72.84%   72.84%           
=======================================
  Files         412      412           
  Lines       26846    26846           
=======================================
+ Hits        19556    19557    +1     
+ Misses       7288     7287    -1     
  Partials        2        2           

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