deps: update dependency io.grpc:grpc-testing to v1.32.1

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
io.grpc:grpc-testing	minor	1.31.1 -> 1.32.1

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Release Notes

grpc/grpc-java

v1.32.1

Compare Source

API Changes

• api: Removed deprecated method ChannelBuilder.blockingExecutor() (#​7242). There should not be any users as it was deprecated the first release it was available and was renamed offloadExecutor().
• grpclb: Make ATTR_LB_ADDRS public (#​7230). This is necessary to configure grpclb from a custom NameResolver

New Features

• xds: perform header matching on concatenated multi-valued headers (#​7215)
• xds: add header matching special cases for hiding/exposing some gRPC headers (#​7224). The only gRPC header available for header matching is “content-type”.
• xds: support load reporting all clusters option and fix actual report interval measurement (#​7209). If the LRS response enables send_all_clusters, the client side will report loads for all clusters it is currently using.

Bug Fixes

• core, alts, cronet: Fix ByteBuffer covariant method usages (#​7349). When built with Java 9+, internal usages of ByteBuffer APIs may cause runtime breakage for dependent applications running with Java 8. This is fixed now.
• core: Fixed a bug that RPC may hang when hedging is enabled with a throttling configuration (#​7337)
• netty: The environment variable GRPC_EXPERIMENTAL_AUTOFLOWCONTROL=false will now disable the BDP monitoring introduced in v1.30.0. This is intended to help diagnose a “too_many_pings” compatibility issue and will be removed once it is resolved. If you need to use the variable, please file an issue
• benchmarks: Use correct classpath for scripts (the ones in the bin/ folder of the tar/zip), fixing NoClassDefFoundErrors. The classpath was probably broken starting in v1.30.
• xds: routing policy should immediately update a picker that selects base on updated config (#​7233)

Dependencies

• netty: Upgrade to Netty 4.1.51 and tcnative 2.0.31
• android, cronet: Drop support for android SDK versions older than 16 (#​7253). The minimum supported Android SDK version is 16.

Acknowledgements

@​susinmotion
@​trustin
@​wanyingd1996

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