Bump grpcio from 1.8.4 to 1.25.0

[dependabot-preview]

Bumps grpcio from 1.8.4 to 1.25.0.

Release notes

Sourced from grpcio's releases.

Release v1.25.0

This is the 1.25.0 release (game) 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

• Change RR to consider a subchannel in TF if it has failed since it was READY. (#20245)
• Fix a use after free in c-ares on Windows. (#20274)

C++

• Honor CARES_ROOT_DIR. (#20630)
• Make cmake grpc.pc depend on openssl too. (#20621)
• Create pkg-config files from CMake. (#20211)
• Add C++ wrapper for SPIFFE credentials v2. (#19778)
• Upgrade bazel to 0.29.1. (#20222)

C#

• Provide length when getting serialization buffer writer. (#20691)
• Fix error when changing Protobuf item values in Visual Studio. (#20569)
• Add generic variance to reader and writer interfaces. (#20549)

Objective-C

• Added convenience class GRPCUnaryResponseHandler for unary calls. (#20560)
• Fixed an issue where Swift application depending on gRPC is unable to archive. (#20527)

PHP

• PHP: fix zend_hash_str_del() segfault. (#20249)

Python

• Add experimental option to run unary-stream RPCs on a single Python thread. (#20753)
• [AIO] Minimal AsyncIO Server. (#20598)
• Switch to concrete classes in experimental asyncio. (#20326)
• Add manylinux2010_x86 wheels into artifacts. (#20673)
• Release 3.8 binary wheels. (#20616)
• Make grpc_testing's Servicer context abort method stop execution of the servicer handler. (#20426)

... (truncated)

Changelog

Sourced from grpcio's changelog.

v1.25.0 |Oct 22, 2019 |Nov 5, 2019
v1.26.0 |Dec 3, 2019 |Dec 17, 2019

Commits

• c1d1765 Merge pull request #20948 from yashykt/v1.25.0-bump
• 2b3501a Merge pull request #20946 from stanley-cheung/php-backport-update-dockerfiles
• 06a6175 Regenerate projects
• 1d3cc36 Bump version to v1.25.0
• ffae333 PHP: backport dockerfile fixes
• 91b1531 Merge pull request #20888 from lidizheng/backport-i20452
• 399e1ce Merge pull request #20882 from muxi/port
• f16fcaa Issue 19208: Avoid double close of file-descriptors (poll)
• 78bca53 generate_projects
• cad4cc1 Ignore docs in Cocoapods generated directory
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #90.