Fixing setuptools deprecation warnings

Author: apetenchea

pyproject.toml

@@ -19,12 +19,12 @@ maintainers = [
 keywords = ["arangodb", "python", "driver", "async"]
 readme = "README.md"
 dynamic = ["version"]
-license = { file = "LICENSE" }
+license = "MIT"
+license-files = "LICENSE"
 requires-python = ">=3.9"
 
 classifiers = [
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",