deps: update core dependencies

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
io.grpc:grpc-bom	patch	1.28.0 -> 1.28.1
com.google.api:gax-grpc	minor	1.55.0 -> 1.56.0
com.google.api:gax-bom	minor	1.55.0 -> 1.56.0

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Release Notes

grpc/grpc-java

v1.28.1

Compare Source

Bug Fixes

• xds: implement more clear specifications for locality filtering (allow localities with 0 endpoint, ignore localities with 0 weight, check for locality priority continuity). (#​6875)

googleapis/gax-java

v1.56.0

Compare Source

04-06-2020 10:29 PDT

New Features

• Add ability to partially update retry settings (#​993)

Dependencies

• Update grpc to 1.28.1 (#​1013)
• Update com.google.api:api-common to 1.9.0 (#​992)
• Add javax.annotations dependency in bazel build to gax-grpc (#​1000)

Internal / Testing Changes

• test: make it easier to debug failures in SettingsTest (#​994)
• build: update dependency gradle.plugin.com.dorongold.plugins:task-tree to v1.5 (#​995)
• test: update dependency com.google.api.grpc:grpc-google-cloud-pubsub-v1 to v1.86.0 (#​1008)

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[codecov]

Codecov Report

Merging #127 into master will not change coverage by %.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #127   +/-   ##
=========================================
  Coverage     78.37%   78.37%           
  Complexity      302      302           
=========================================
  Files            21       21           
  Lines          2719     2719           
  Branches        134      134           
=========================================
  Hits           2131     2131           
  Misses          513      513           
  Partials         75       75           

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