deps: update dependency com.google.errorprone:error_prone_annotations to v2.3.4

[renovate-bot]

This PR contains the following updates:

Package	Update	Change
com.google.errorprone:error_prone_annotations	patch	2.3.3 -> 2.3.4

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[codecov]

Codecov Report

Merging #105 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #105      +/-   ##
============================================
- Coverage     66.68%   66.64%   -0.04%     
- Complexity      365      370       +5     
============================================
  Files            34       34              
  Lines          1870     1877       +7     
  Branches        237      240       +3     
============================================
+ Hits           1247     1251       +4     
- Misses          521      524       +3     
  Partials        102      102

Impacted Files	Coverage Δ	Complexity Δ
...re/src/main/java/com/google/cloud/RetryHelper.java	50% <0%> (-3.85%)	2% <0%> (ø)
...src/main/java/com/google/cloud/ServiceOptions.java	44.26% <0%> (+0.04%)	33% <0%> (+1%)	⬆️
...a/com/google/cloud/testing/BaseEmulatorHelper.java	31.42% <0%> (+0.21%)	5% <0%> (ø)	⬇️
.../com/google/cloud/MonitoredResourceDescriptor.java	84.03% <0%> (+0.27%)	24% <0%> (+4%)	⬆️

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