chore: update gapic-generator-java to 0.0.18

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

[codecov]

Codecov Report

Merging #410 (a1923b4) into master (9bd11d7) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #410   +/-   ##
=========================================
  Coverage     70.68%   70.68%           
  Complexity       88       88           
=========================================
  Files            12       12           
  Lines           580      580           
  Branches          2        2           
=========================================
  Hits            410      410           
  Misses          168      168           
  Partials          2        2           

Impacted Files	Coverage Δ	Complexity Δ
.../java/com/google/cloud/speech/v1/SpeechClient.java	51.35% <ø> (ø)	12.00 <0.00> (ø)
...loud/speech/v1/stub/GrpcSpeechCallableFactory.java	62.50% <ø> (ø)	5.00 <0.00> (ø)
...va/com/google/cloud/speech/v1/stub/SpeechStub.java	16.66% <ø> (ø)	1.00 <0.00> (ø)
...oogle/cloud/speech/v1/stub/SpeechStubSettings.java	83.07% <ø> (ø)	13.00 <0.00> (ø)
...om/google/cloud/speech/v1p1beta1/SpeechClient.java	51.35% <ø> (ø)	12.00 <0.00> (ø)
.../google/cloud/speech/v1p1beta1/SpeechSettings.java	20.00% <ø> (ø)	2.00 <0.00> (ø)
...eech/v1p1beta1/stub/GrpcSpeechCallableFactory.java	62.50% <ø> (ø)	5.00 <0.00> (ø)
...le/cloud/speech/v1p1beta1/stub/GrpcSpeechStub.java	87.83% <ø> (ø)	11.00 <0.00> (ø)
...google/cloud/speech/v1p1beta1/stub/SpeechStub.java	16.66% <ø> (ø)	1.00 <0.00> (ø)

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