Regenerate bigquerystorage 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-bigquerystorage/synth.py.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:6929f343c400122d85818195b18613330a12a014bffc1e08499550d40571479d
Status: Image is up to date for googleapis/artman:latest
synthtool > Cloning googleapis.
synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1beta1.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/java.
synthtool > Running java formatter on 23 files
synthtool > Running java formatter on 1 files
synthtool > Running java formatter on 5 files
synthtool > Cleaned up 0 temporary directories.
synthtool > Wrote metadata to synth.metadata.

[codecov]

Codecov Report

Merging #5963 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@ Coverage Diff @@## master #5963 +/- ##
============================================
+ Coverage 46.79% 46.79% +<.01% + Complexity 25663 25648 -15 
============================================
Files 2456 2456 Lines 267638 267639 +1 Branches 30559 30564 +5 ============================================
+ Hits 125244 125245 +1 
Misses 133134 133134 Partials 9260 9260

Impacted Files	Coverage Δ	Complexity Δ
...rage/v1beta1/stub/BigQueryStorageStubSettings.java	84.61% <100%> (+0.1%)	14 <1> (ø)	⬇️

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[chingor13]

Combined into a single pull request #6023