Update dependency grpc to v1.84.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
grpc	bazel_dep	minor	1.83.0 → 1.84.0

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Release Notes

grpc/grpc (grpc)

v1.84.0

This is release 1.84.0 (gimbal) of gRPC Core.

For gRPC documentation, see grpc.io. For previous releases, see Releases.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Core

• [promise_based_filter] enable v2_non_owning_waker_implementation experiment. (#​43253)
• [xDS] allow server listener address to match wildcard port. (#​43247)
• [WRR] remove env var guard for custom backend metrics. (#​43198)
• [subchannel] enable connection scaling service config fields. (#​43116)
• [subchannel] add metrics as per A94. (#​43140)
• Fix incorrect hostname suffix matching in no_proxy handling (prevents proxy bypass). (#​41915)

C#

• [C# Grpc.Tools] Add native macOS ARM64 support via universal binaries. (#​41222)

Python

• [Python] Fix -Werror=unused-result error triggered by Cythonized code. (#​43313)
• [Python] Release Python 3.15 wheels publicly. (#​43259)
• [Python][AsyncIO] Fixed reference cycles. (#​43121)
• [Python] fix: remove ghost key in grpc.aio.Metadata.delitem when last value is deleted. (#​42974)
• [Python] Fix the StatusCode Enums to be int. (#​43167)
• [Python] Fixed the parenthesis placement. (#​43111)
• [Python] Removed UsageError exception from registered method. (#​43086)
• [Python] Added registered methods support in AsyncIO stack . (#​41796)
• [Python] AIO Part 4 - Typehints fixes and add Pyright for aio/_channel.py. (#​42736)
• [Python] grpc-status: Relax protobuf dependency lower bound to allow 6.x. (#​43000)
• [Python] Observability plugin fixes. (#​42785)
• [Python] Pyright strict mode. (#​42845)

Ruby

• [Ruby] Fix: Addressed Array of strings passed as metadata. (#​42827)

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