fix(deps): update module google.golang.org/grpc to v1.69.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
google.golang.org/grpc	v1.69.2 -> v1.69.4

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Warning

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Release Notes

grpc/grpc-go (google.golang.org/grpc)

v1.69.4: Release 1.69.4

Compare Source

Bug Fixes

• rbac: fix support for :path header matchers, which would previously never successfully match (#​7965).

Documentation

• examples/features/csm_observability: update example client and server to use the helloworld service instead of echo service (#​7945).

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.5%. Comparing base (3cb1cc2) to head (65624e1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #6600   +/-   ##
=====================================
  Coverage   68.5%   68.5%           
=====================================
  Files        200     200           
  Lines      16781   16781           
=====================================
+ Hits       11500   11506    +6     
+ Misses      4935    4931    -4     
+ Partials     346     344    -2     

see 1 file with indirect coverage changes