🔧 Set minimal hatchling version needed to build the package (#9240)

Set minimal hatchling version needed to build the package

Set the minimal hatchling version that is needed to build fastapi to
1.13.0.  Older versions fail to build because they do not recognize
the trove classifiers used, e.g. 1.12.2 yields:

    ValueError: Unknown classifier in field `project.classifiers`: Framework :: Pydantic

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["hatchling"]
+requires = ["hatchling >= 1.13.0"]
 build-backend = "hatchling.build"
 
 [project]