Change required Python version to >=3.10

Updated Python version requirements and classifiers.

Author: cclauss

pyproject.toml

@@ -11,18 +11,18 @@ authors = [
 description = "Pytest plugin for trio"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {file = "LICENSE"}
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 classifiers = [
     "Development Status :: 4 - Beta",
     "License :: OSI Approved :: MIT License",
     "License :: OSI Approved :: Apache Software License",
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",