Regenerate dataproc client

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Here's the log from Synthtool:

synthtool > Executing /tmpfs/src/git/autosynth/working_repo/google-cloud-clients/google-cloud-dataproc/synth.py.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:28d4271586772b275cd3bc95cb46bd227a24d3c9048de45dccdb7f3afb0bfba9
Status: Image is up to date for googleapis/artman:latest
synthtool > Cloning googleapis.
synthtool > Running generator for google/cloud/dataproc/artman_dataproc_v1.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/java.
synthtool > Running java formatter on 67 files
synthtool > Running java formatter on 3 files
synthtool > Running java formatter on 136 files
synthtool > Running generator for google/cloud/dataproc/artman_dataproc_v1beta2.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/java.
synthtool > Running java formatter on 67 files
synthtool > Running java formatter on 4 files
synthtool > Running java formatter on 172 files
synthtool > Cleaned up 0 temporary directories.
synthtool > Wrote metadata to synth.metadata.

[codecov]

Codecov Report

Merging #5222 into master will decrease coverage by <.01%.
The diff coverage is 62.5%.

@@ Coverage Diff @@## master #5222 +/- ##
============================================
- Coverage 50.45% 50.45% -0.01% 
Complexity 23855 23855 ============================================
Files 2257 2257 Lines 227288 227303 +15 Branches 24976 24978 +2 ============================================
+ Hits 114675 114682 +7 - Misses 103995 104001 +6 - Partials 8618 8620 +2

Impacted Files	Coverage Δ	Complexity Δ
...ataproc/v1beta2/WorkflowTemplateServiceClient.java	56.92% <50%> (-2.59%)	33 <1> (ø)
...oud/dataproc/v1/WorkflowTemplateServiceClient.java	56.92% <83.33%> (-3.57%)	33 <2> (ø)
.../cloud/datastore/testing/LocalDatastoreHelper.java	85.07% <0%> (+4.47%)	17% <0%> (ø)	⬇️
.../java/com/google/cloud/testing/CommandWrapper.java	96.96% <0%> (+9.09%)	13% <0%> (ø)	⬇️

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