deps: update dependency io.grpc:grpc-bom to v1.26.0

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
io.grpc:grpc-bom (source)	minor	1.25.0 -> 1.26.0

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Release Notes

grpc/grpc-java

v1.26.0

Compare Source

Dependencies

• Bump protobuf-java to 3.11.0.
• Bump protobuf-javalite to 3.11.0. This brings lite in-line with full protobuf. Be aware that the Maven artifact name changed for Protobuf lite. The dependency is now com.google.protobuf:protobuf-javalite instead of com.google.protobuf:protobuf-lite
• Bump gson to 2.8.6
• Bump google-auth-library-credentials and google-auth-library-oauth2-http to 0.18.0 (#​6360)
• Bump mockito to 2.28.2 (#​6355)

Bug Fixes

• netty, okhttp: Known IOExceptions are logged as FINE level
• interop-testing, benchmarks: missing executables (since 1.19.0) is now published again
• cronet: grpc-cronet artifact contains empty .aar due to code shrinking was enabled, now it is fixed.
• alts: fix lazychannel close (#​6475)

API Changes

• api, core: make channel logger accessible through NameResolver.Args (#​6430)
• api, core: make scheduled executor service accessible for NameResolver.Args (#​6455)
• stub, compiler: generated stubs are now extended from AbstractStub to indicate stub type (AbstractAsyncStub, AbstractFutureStub, AbstractFutureStub)
• api: the deprecated API ManagedChannelBuilder.usePlaintext(boolean) is removed (#​1772, #​6440).

New Features

• Pre-build binaries for the aarch64 platform
• Add s390x cross-compiling support

Acknowledgements

• Carl Mastrangelo (@​carl-mastrangelo)
• Elliotte Rusty Harold (@​elharo)
• Liu sheng (@​liusheng)
• Nayana Thorat (@​nayana-ibm)
• Steve Rao (@​steverao)
• Tomo Suzuki (@​suztomo)
• Yongwoo Noh (@​yonguno)

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[codecov]

Codecov Report

Merging #30 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #30   +/-   ##
=========================================
  Coverage     66.57%   66.57%           
  Complexity       48       48           
=========================================
  Files             6        6           
  Lines           347      347           
  Branches          5        5           
=========================================
  Hits            231      231           
  Misses          111      111           
  Partials          5        5

Impacted Files	Coverage Δ	Complexity Δ
...cloud/iam/credentials/v1/IamCredentialsClient.java	45.55% <0%> (ø)	19% <0%> (ø)	⬇️

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