fix(deps): update module google.golang.org/grpc to v1.77.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
google.golang.org/grpc	v1.75.1 -> v1.77.0

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Release Notes

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

v1.77.0: Release 1.77.0

Compare Source

API Changes

• mem: Replace the Reader interface with a struct for better performance and maintainability. (#​8669)

Behavior Changes

• balancer/pickfirst: Remove support for the old pick_first LB policy via the environment variable GRPC_EXPERIMENTAL_ENABLE_NEW_PICK_FIRST=false. The new pick_first has been the default since v1.71.0. (#​8672)

Bug Fixes

• xdsclient: Fix a race condition in the ADS stream implementation that could result in resource-not-found errors, causing the gRPC client channel to move to TransientFailure. (#​8605)
• client: Ignore HTTP status header for gRPC streams. (#​8548)
• client: Set a read deadline when closing a transport to prevent it from blocking indefinitely on a broken connection. (#​8534)
  • Special Thanks: @​jgold2-stripe
• client: Fix a bug where default port 443 was not automatically added to addresses without a specified port when sent to a proxy.
  • Setting environment variable GRPC_EXPERIMENTAL_ENABLE_DEFAULT_PORT_FOR_PROXY_TARGET=false disables this change; please file a bug if any problems are encountered as we will remove this option soon. (#​8613)
• balancer/pickfirst: Fix a bug where duplicate addresses were not being ignored as intended. (#​8611)
• server: Fix a bug that caused overcounting of channelz metrics for successful and failed streams. (#​8573)
  • Special Thanks: @​hugehoo
• balancer/pickfirst: When configured, shuffle addresses in resolver updates that lack endpoints. Since gRPC automatically adds endpoints to resolver updates, this bug only affects custom LB policies that delegate to pick_first but don't set endpoints. (#​8610)
• mem: Clear large buffers before re-using. (#​8670)

Performance Improvements

• transport: Reduce heap allocations to reduce time spent in garbage collection. (#​8624, #​8630, #​8639, #​8668)
• transport: Avoid copies when reading and writing Data frames. (#​8657, #​8667)
• mem: Avoid clearing newly allocated buffers. (#​8670)

New Features

• outlierdetection: Add metrics specified in gRFC A91. (#​8644)
  • Special Thanks: @​davinci26, @​PardhuKonakanchi
• stats/opentelemetry: Add support for optional label grpc.lb.backend_service in per-call metrics (#​8637)
• xds: Add support for JWT Call Credentials as specified in gRFC A97. Set environment variable GRPC_EXPERIMENTAL_XDS_BOOTSTRAP_CALL_CREDS=true to enable this feature. (#​8536)
  • Special Thanks: @​dimpavloff
• experimental/stats: Add support for up/down counters. (#​8581)

v1.76.0: Release 1.76.0

Compare Source

Dependencies

• Minimum supported Go version is now 1.24 (#​8509)
  • Special Thanks: @​kevinGC

Bug Fixes

• client: Return status INTERNAL when a server sends zero response messages for a unary or client-streaming RPC. (#​8523)
• client: Fail RPCs with status INTERNAL instead of UNKNOWN upon receiving http headers with status 1xx and END_STREAM flag set. (#​8518)
  • Special Thanks: @​vinothkumarr227
• pick_first: Fix race condition that could cause pick_first to get stuck in IDLE state on backend address change. (#​8615)

New Features

• credentials: Add credentials/jwt package providing file-based JWT PerRPCCredentials (A97). (#​8431)
  • Special Thanks: @​dimpavloff

Performance Improvements

• client: Improve HTTP/2 header size estimate to reduce re-allocations. (#​8547)
• encoding/proto: Avoid redundant message size calculation when marshaling. (#​8569)
  • Special Thanks: @​rs-unity

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[renovate]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 6 additional dependencies were updated

Details:

Package	Change
golang.org/x/crypto	v0.42.0 -> v0.43.0
golang.org/x/net	v0.43.0 -> v0.46.1-0.20251013234738-63d1a5100f82
golang.org/x/sys	v0.36.0 -> v0.37.0
golang.org/x/text	v0.29.0 -> v0.30.0
google.golang.org/genproto/googleapis/rpc	v0.0.0-20250707201910-8d1bb00bc6a7 -> v0.0.0-20251022142026-3a174f9686a8
google.golang.org/protobuf	v1.36.8 -> v1.36.10