+ updated trove classifier again (#121)

Author: jonsedar

pyproject.toml

@@ -14,7 +14,7 @@ classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Financial and Insurance Industry",
-    "License :: Apache Software License",
+    "License :: OSI Approved :: Apache Software License",
     "Natural Language :: English",
     "Operating System :: MacOS",
     "Operating System :: Unix",