Add support for Python 3.13

Author: hugovk

pyproject.toml

@@ -19,6 +19,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Software Development :: Quality Assurance",
   "Topic :: Software Development :: Testing",
   "Topic :: Utilities",