v2.6.0

BigQuery

The library has been expanded to include the following services:

• BigQuery Data Policy API

IAM

• The library has been expanded to include the IAM v2 API. This API includes
  support for IAM Deny policies.

Pub/Sub

• fix: add missing includes (#10421)

Speech

• fix: remove duplicate protos (#10486)

Storage

• fix(storage): better error code for CreateBucket() and 409 errors (#10480)
• fix: add missing includes (#10421)
• fix(storage): scopes should disable self-signed JWTs (#10369)
• doc(storage): document all oauth2 names as deprecated (#10352)

Text-to-Speech

• fix: remove duplicate protos (#10486)

Trace

• fix: remove duplicate protos (#10486)

Common Libraries

• fix: add missing includes (#10421)
• feat(common): support external accounts (#10465) (#10430) (#10357)
• feat(common): options for Make*Credentials() (#10417)
• feat: support logging for unified Rest credentials (#10412)