chore(deps): update dependency com.google.protobuf:protobuf-java to v3.11.0

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.protobuf:protobuf-java	minor	3.10.0 -> 3.11.0

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[codecov]

Codecov Report

Merging #24 into master will increase coverage by 1.12%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master      #24      +/-   ##
============================================
+ Coverage      77.2%   78.33%   +1.12%     
+ Complexity      140      119      -21     
============================================
  Files             6        6              
  Lines          1079     1006      -73     
  Branches         17       17              
============================================
- Hits            833      788      -45     
+ Misses          223      212      -11     
+ Partials         23        6      -17

Impacted Files	Coverage Δ	Complexity Δ
...oogle/cloud/iot/v1/stub/GrpcDeviceManagerStub.java	97.44% <0%> (-0.23%)	25% <0%> (-1%)
...e/cloud/iot/v1/stub/DeviceManagerStubSettings.java	84.21% <0%> (-0.22%)	28% <0%> (-1%)
...a/com/google/cloud/iot/v1/DeviceManagerClient.java	66.38% <0%> (+6.45%)	60% <0%> (-19%)	⬇️

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