chore: update author

Author: bbatha

pyproject.toml

@@ -4,7 +4,7 @@ version = "3.0.0-beta.6"
 description = "The official Python library for the Gradient API"
 dynamic = ["readme"]
 license = "Apache-2.0"
-authors = [{ name = "Gradient", email = "" }]
+authors = [{ name = "DigitalOcean, LLC", email = "dev@digitalocean.com" }]
 dependencies = [
   "httpx>=0.23.0, <1",
   "pydantic>=1.9.0, <3",