Update grpc

[mstoykov]

What?

Update gRPC dependencies

Why?

They are done separately as they sometimes have breaking changes - not this time it seems :)

Checklist

• I have performed a self-review of my code.
• I have added tests for my changes.
• I have run linter locally (make lint) and all checks pass.
• I have run tests locally (make tests) and all tests pass.
• I have commented on my code, particularly in hard-to-understand areas.

Related PR(s)/Issue(s)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (aa0e221) 73.20% compared to head (18ba383) 73.19%.
Report is 4 commits behind head on master.

❗ Current head 18ba383 differs from pull request most recent head 0478f59. Consider uploading reports for the commit 0478f59 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3502      +/-   ##
==========================================
- Coverage   73.20%   73.19%   -0.01%     
==========================================
  Files         267      267              
  Lines       20076    20076              
==========================================
- Hits        14696    14694       -2     
- Misses       4466     4468       +2     
  Partials      914      914              

Flag	Coverage Δ
ubuntu	73.12% <ø> (-0.03%)	⬇️
windows	73.03% <ø> (+<0.01%)	⬆️

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The base branch was changed.