added python classifiers

Author: yarnabrina

examples/clients/simple-sampling-client/pyproject.toml

@@ -29,6 +29,9 @@ classifiers = [
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
   "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Software Development",
   "Topic :: Utilities",
   "Typing :: Typed",