Regenerate kms 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-kms/synth.py.
synthtool > Ensuring dependencies.
synthtool > Pulling artman image.
latest: Pulling from googleapis/artman
Digest: sha256:d9597f983d1d4e61272c63cb97b7d8f8234da9999526c35d357de3d781f0ec1b
Status: Image is up to date for googleapis/artman:latest
synthtool > Cloning googleapis.
synthtool > Running generator for google/cloud/kms/artman_cloudkms.yaml.
synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/java.
synthtool > Running java formatter on 13 files
synthtool > Running java formatter on 1 files
synthtool > Running java formatter on 79 files
synthtool > Cleaned up 0 temporary directories.
synthtool > Wrote metadata to synth.metadata.