chore: SPDX license

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

pyproject.toml

@@ -10,10 +10,10 @@ authors = [
 description = "Check the contents of an SDist vs. git"
 readme = "README.md"
 requires-python = ">=3.9"
+license = "BSD-3-Clause"
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Developers",
-  "License :: OSI Approved :: BSD License",
   "Operating System :: OS Independent",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",