Fix authors to match what PyPI wants

https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#a-full-example

Author: tim-schilling

pyproject.toml

@@ -2,7 +2,7 @@
 name = "django-typer"
 version = "2.2.2"
 description = "Use Typer to define the CLI for your Django management commands."
-authors = ["Brian Kohan <[email protected]>"]
+authors = [{name = "Brian Kohan", email = "[email protected]"}]
 license = {text = "MIT License"}
 readme = "README.md"
 repository = "https://github.com/bckohan/django-typer"