Bump grpcio from 1.8.4 to 1.22.0

[dependabot-preview]

Bumps grpcio from 1.8.4 to 1.22.0.

Release notes

Sourced from grpcio's releases.

Release v1.22.0

This is the 1.22.0 release (gale) 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

• building upb as part of cmake build is not necessary (for v1.22.x). (#19432)
• Convert TraceFlags in the hot path to DebugTraceFlags. (#19315)
• Fix a bug where POST_RECV_MESSAGE was not being triggered. (#19142)
• Adjust the order of IOMgr timer initialization and comment of grpc_timer::heap_index. (#19163)

C++

• use bazel wrapper for "bazel" invocations in grpc workspace. (#19249)
• Add method to validate service config json. (#19021)
• Update comment on ssl hostname override. (#19118)
• Rename root certificate bundle in gRPC-C++ pod. (#19082)

C#

• Add MSBuild metadata to set LiteClient for client generation. (#19306)
• Avoid regex inefficiencies in no-match scenarios. (#19259)
• Migrate types required for client interceptors to Grpc.Core.Api. (#19308)
• Add C# LiteClientBase and "lite_client" codegen option. (#18705)

Objective-C

• Add support for CMAKE_SYSTEM_NAME=iOS. (#19302)
• Implement L50: Objective-C Interceptor. (#18852)
• remove notification observer to avoid iOS 8 crash. (#19169)

PHP

• PHP: Allow dots in metadata keys. (#19232)
• Hotfix for PHP jwt_token_creds interop test. (#19230)
• PHP: Fix ZTS build shutdown segfault. (#19204)
• PHP: Fix ZTS build error. (#19160)
• Fix PHP extension segfault. (#19109)

Python

... (truncated)

Changelog

Sourced from grpcio's changelog.

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

Commits

• 08fd59f Merge pull request #19528 from veblush/v1.22.x
• 1399d06 Regenerate projects
• 1e46a3a Bump version to v1.22.0
• 1693183 Merge pull request #19424 from apolcyn/drop_ruby_22_backport
• cca7c88 Merge pull request #19432 from jtattermusch/upb_cmake_unness
• 2bf9234 building upb as part of cmake build is not necessary
• 1a0eb8b Also updated fedora 2.2 and 2.3 dockerfiles
• 7361c44 Pin bundler where needed
• 30c700f Drop support for ruby < 2.3; update and unskip distrib tests
• 35230ef Merge pull request #19415 from apolcyn/backport_skip_broken_distrib
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #72.