Bump grpc from 1.30.2 to 1.31.1

[dependabot-preview]

Bumps grpc from 1.30.2 to 1.31.1.

Release notes

Sourced from grpc's releases.

Release v1.31.1

This is the 1.31.1 release (galore) of gRPC Core.

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.

This release is a patch specifically for the Ruby bindings, which adds two backported PRs:

• Backport "Ruby: use absolute module name for request/response namespaces" to 1.31.x (grpc/grpc#23830)
• Backport "Copy channel args hash before appending ruby user agent" to 1.31.x (grpc/grpc#23826)

Release v1.31.0

This is the 1.31.0 release (galore) of gRPC Core.

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.

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

Core

The following new xDS functionality is added in this release:

• Requests matching based on path (prefix, full path and safe regex) and headers.
• Requests routing to multiple clusters based on weights.
• The features supported in a given release are documented here.

Other changes:

• Remove MAX_EPOLL_EVENTS_HANDLED_EACH_POLL_CALL to ensure timely processing of events. (#23535)
• Include the target name in top-level DNS error messages. (#23493)
• Remove xds-experimental URI scheme. (#23463)
• fix memory leak of grpc_resource_user_quota. (#22201)
• Store ref to the ExternalConnectivityWatcher in external_watchers_ map. (#23418)
• Update grpclb configuration with field "service_name". (#22345)
• Fix possible deadlock in RemoveExternalConnectivityWatcher. (#23365)
• Enable TLS 1.3 in the C-core and all wrapped languages. (#23165)
• Add message-size check before message decompression with ordering change. (#23293)
• Fix race condition caused by simultaneous updates on SSL server handshaker. (#22647)
• Add missing reset for ping clocks to avoid mistakenly sending GOAWAY frames due to 'too_many_pings'. (#23145)

C++

• Simplify makefile: Get rid of "install" rules with pure make, recommend cmake and bazel instead. (#23412)
• Replaced grpc::string with std::string. (#23350)
• Fix wrong version in gRPCConfigVersion.cmake and grpc++*.pc. (#22982)

C#

• Avoid collisions in cs files generated by Grpc.Tools. (#22869)
• Add Grpc.Auth support for Google.Apis.Auth.ITokenAccessWithHeaders. (#21616)

Changelog

Sourced from grpc's changelog.

gRPC Release Schedule

Below is the release schedule for gRPC Java, Go and Core and its dependent languages C++, C#, Objective-C, PHP, Python and Ruby.

Releases are scheduled every six weeks on Tuesdays on a best effort basis. In some unavoidable situations a release may be delayed or a language may skip a release altogether and do the next release to catch up with other languages. See the past releases in the links above. A six-week cycle gives us a good balance between delivering new features/fixes quickly and keeping the release overhead low.

Releases are cut from release branches. For Core and Java repos, the release branch is cut two weeks before the scheduled release date. For Go, the branch is cut just before the release. An RC (release candidate) is published for Core and its dependent languages just after the branch cut. This RC is later promoted to release version if no further changes are made to the release branch. We do our best to keep head of master branch stable at all times regardless of release schedule. Daily build packages from master branch for C#, PHP, Python, Ruby and Protoc plugins are published on packages.grpc.io. If you depend on gRPC in production we recommend to set up your CI system to test the RCs and, if possible, the daily builds.

Names of gRPC releases are here.

Release	Scheduled Branch Cut	Scheduled Release Date
v1.17.0	Nov 19, 2018	Dec 4, 2018
v1.18.0	Jan 2, 2019	Jan 15, 2019
v1.19.0	Feb 12, 2019	Feb 26, 2019
v1.20.0	Mar 26, 2019	Apr 9, 2019
v1.21.0	May 7, 2019	May 21, 2019
v1.22.0	Jun 18, 2019	Jul 2, 2019
v1.23.0	Jul 30, 2019	Aug 13, 2019
v1.24.0	Sept 10, 2019	Sept 24, 2019
v1.25.0	Oct 22, 2019	Nov 5, 2019
v1.26.0	Dec 3, 2019	Dec 17, 2019
v1.27.0	Jan 14, 2020	Jan 28, 2020
v1.28.0	Feb 25, 2020	Mar 10, 2020
v1.29.0	Apr 7, 2020	Apr 21, 2020
v1.30.0	May 19, 2020	Jun 2, 2020
v1.31.0	Jul 14, 2020	Jul 28, 2020
v1.32.0	Aug 25, 2020	Sep 8, 2020
v1.33.0	Oct 6, 2020	Oct 20, 2020
v1.34.0	Nov 17, 2020	Dec 1, 2020
v1.35.0	Dec 29, 2020	Jan 12, 2021
v1.36.0	Feb 9 26, 2021	Feb 23, 2021

Commits

• 7d7e456 Merge pull request #23827 from apolcyn/bump_to_1_31_1
• c61e4d7 Merge pull request #23830 from stanley-cheung/ruby-protoc-plugin-fix-1_31
• 0894f21 Ran generate_proto_ruby.sh to update generated files
• 3541005 change test case to absolute package name
• 5591154 use absolute package name, add test cases
• 011986e Regenerate projects
• b65daaa Copy channel args hash before appending ruby user agent
• 1cdb232 Merge pull request #23740 from jtattermusch/csharp_interop_xds_splitting_and_...
• db54a04 support xDS traffic splitting and routing in c# interop
• 949b635 regenerate protos
• Additional commits viewable in compare view

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