Update pyproject.toml with current python versions

Signed-off-by: Casper Beyer <casper@synadia.com>

Author: caspervonb

nats-server/pyproject.toml

@@ -7,7 +7,7 @@ name = "nats-server"
 version = "0.0.0"
 description = 'Python library for managing NATS servers for development and testing'
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.11"
 license = "MIT"
 keywords = ["nats", "messaging", "testing"]
 authors = [
@@ -16,11 +16,9 @@ authors = [
 classifiers = [
   "Development Status :: 4 - Beta",
   "Programming Language :: Python",
-  "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 :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
 ]