Update pyproject.toml

Author: viferga

source/ports/py_port/pyproject.toml

@@ -12,6 +12,7 @@ requires-python = ">=3.3"
 license = "Apache-2.0"
 authors = [{ name = "Vicente Eduardo Ferrer Garcia", email = "[email protected]" }]
 classifiers = [
+    "License :: OSI Approved :: Apache Software License",
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
     "Topic :: Software Development :: Interpreters",