Update module google.golang.org/grpc to v1.59.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
google.golang.org/grpc	require	minor	v1.58.3 -> v1.59.0

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Release Notes

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

v1.59.0: Release 1.59.0

Compare Source

Behavior Changes

• balancer: grpc will switch to case-sensitive balancer names soon; log a warning if a capital letter is encountered in an LB policy name (#​6647)
• server: allow applications to send arbitrary data in the grpc-status-details-bin trailer (#​6662)
• client: validate grpc-status-details-bin trailer and pass through the trailer to the application directly (#​6662)

New Features

• tap (experimental): Add Header metadata to tap handler (#​6652)
  • Special Thanks: @​pstibrany
• grpc: channel idleness enabled by default with an idle_timeout of 30m (#​6585)

Documentation

• examples: add an example of flow control behavior (#​6648)

Bug Fixes

• xds: fix hash policy header to skip "-bin" headers and read content-type header as expected (#​6609)

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