Update dependency Grpc.Tools to 2.76.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Grpc.Tools	2.32.0 → 2.76.0

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Configuration

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[codecov-io]

Codecov Report

Merging #562 (6766899) into master (73bf565) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #562   +/-   ##
=======================================
  Coverage   45.05%   45.05%           
=======================================
  Files         143      143           
  Lines        4071     4071           
  Branches      348      348           
=======================================
  Hits         1834     1834           
  Misses       2236     2236           
  Partials        1        1           

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