Update google.golang.org/genproto commit hash to ac7456d (master)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
google.golang.org/genproto	require	digest	8816d57 -> ac7456d

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[codecov-io]

Codecov Report

Merging #1808 (3593dea) into master (2d3186a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1808   +/-   ##
=======================================
  Coverage   57.28%   57.28%           
=======================================
  Files          34       34           
  Lines        3615     3615           
=======================================
  Hits         2071     2071           
  Misses       1284     1284           
  Partials      260      260           

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