chore: update gapic-generator-java to 0.0.18

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Synth log will be available here:
https://source.cloud.google.com/results/invocations/61f06bf2-b944-4408-9572-8ae03cbf6fc1/targets

• To automatically regenerate this PR, check this box.

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

[codecov]

Codecov Report

Merging #305 (a15c6ea) into master (a56a498) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #305   +/-   ##
=========================================
  Coverage     79.98%   79.98%           
  Complexity      196      196           
=========================================
  Files            12       12           
  Lines          1609     1609           
  Branches         12       12           
=========================================
  Hits           1287     1287           
  Misses          302      302           
  Partials         20       20           

Impacted Files	Coverage Δ	Complexity Δ
...va/com/google/cloud/redis/v1/CloudRedisClient.java	73.64% <ø> (ø)	48.00 <0.00> (ø)
...com/google/cloud/redis/v1/stub/CloudRedisStub.java	5.26% <ø> (ø)	1.00 <0.00> (ø)
...le/cloud/redis/v1/stub/CloudRedisStubSettings.java	89.42% <ø> (ø)	26.00 <0.00> (ø)
...d/redis/v1/stub/GrpcCloudRedisCallableFactory.java	50.00% <ø> (ø)	4.00 <0.00> (ø)
...m/google/cloud/redis/v1beta1/CloudRedisClient.java	73.64% <ø> (ø)	48.00 <0.00> (ø)
...google/cloud/redis/v1beta1/CloudRedisSettings.java	11.86% <ø> (ø)	2.00 <0.00> (ø)
...oogle/cloud/redis/v1beta1/stub/CloudRedisStub.java	5.26% <ø> (ø)	1.00 <0.00> (ø)
...is/v1beta1/stub/GrpcCloudRedisCallableFactory.java	50.00% <ø> (ø)	4.00 <0.00> (ø)
...e/cloud/redis/v1beta1/stub/GrpcCloudRedisStub.java	93.41% <ø> (ø)	17.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a56a498...a15c6ea. Read the comment docs.