Release google-cloud-talent-v4 0.2.0 (googleapis#7859)

Release google-cloud-storage 1.29.1 (googleapis#7849)

#### Bug Fixes

* Fix encoding of space characters in file names in signed_url v4

#### Documentation

* Update Bucket#default_kms_key= docs
  * Demonstrate deleting the Cloud KMS encryption key
* Update customer-supplied encryption key docs and examples ([googleapis#7851](https://www.github.com/googleapis/google-cloud-ruby/issues/7851))

Release google-cloud-video_intelligence-v1 0.3.0 (googleapis#7843)

Release google-cloud-video_intelligence 3.0.1 (googleapis#7844)

Release google-cloud-firestore 2.3.0 (googleapis#7836)

#### Features

* Add error callbacks for listener threads
  * Add DocumentListener#last_error
  * Add DocumentListener#on_error
  * Add QueryListener#last_error
  * Add QueryListener#on_error

Release google-cloud-security_center-v1p1beta1 0.4.1 (googleapis#7814)

Release google-cloud-policy_troubleshooter 0.1.0 (googleapis#7824)

Initial release.

Release google-cloud-notebooks-v1beta1 0.2.0 (googleapis#7834)

Release google-cloud-notebooks 0.1.0 (googleapis#7826)

Initial release.

Release google-cloud-functions 0.1.0 (googleapis#7825)

Initial release.