chore: update gapic-generator-java to 0.0.18

[yoshi-automation]

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PiperOrigin-RevId: 350949863
Source-Link: googleapis/googleapis@91e206b

[codecov]

Codecov Report

Merging #347 (bda5a19) into master (74564b2) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #347   +/-   ##
=========================================
  Coverage     76.30%   76.30%           
  Complexity      138      138           
=========================================
  Files            12       12           
  Lines           768      768           
  Branches          2        2           
=========================================
  Hits            586      586           
  Misses          180      180           
  Partials          2        2           

Impacted Files	Coverage Δ	Complexity Δ
...oogle/cloud/language/v1/LanguageServiceClient.java	81.48% <ø> (ø)	35.00 <0.00> (ø)
...ge/v1/stub/GrpcLanguageServiceCallableFactory.java	37.50% <ø> (ø)	3.00 <0.00> (ø)
...le/cloud/language/v1/stub/LanguageServiceStub.java	14.28% <ø> (ø)	1.00 <0.00> (ø)
.../language/v1/stub/LanguageServiceStubSettings.java	81.74% <ø> (ø)	15.00 <0.00> (ø)
.../cloud/language/v1beta2/LanguageServiceClient.java	81.48% <ø> (ø)	35.00 <0.00> (ø)
...loud/language/v1beta2/LanguageServiceSettings.java	17.94% <ø> (ø)	2.00 <0.00> (ø)
...beta2/stub/GrpcLanguageServiceCallableFactory.java	37.50% <ø> (ø)	3.00 <0.00> (ø)
...language/v1beta2/stub/GrpcLanguageServiceStub.java	91.86% <ø> (ø)	13.00 <0.00> (ø)
...oud/language/v1beta2/stub/LanguageServiceStub.java	14.28% <ø> (ø)	1.00 <0.00> (ø)

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