Prep v1.48.0 release. (digitalocean#389)

Prepare to releave v1.47.0 (digitalocean#387)

Merge pull request digitalocean#374 from bentranter/release-1.46.0

Prepare to release v1.46.0

Prep v1.45.0 release. (digitalocean#370)

* Prep v1.45.0 release.

* Bump date.

Prep v1.44.0 release. (digitalocean#366)

Prep v1.43.0 release. (digitalocean#363)

Prep v1.42.1 release. (digitalocean#361)

Prep v1.42.0 release. (digitalocean#359)

Prep v1.41.0 release. (digitalocean#356)

Prep v1.40.0 release. (digitalocean#354)