Update package metadata (#33087)

## Summary & Motivation

Need to track down a few failing tests -- they seem to be just related to warning messages but better to be safe here.

## How I Tested These Changes

## Changelog

> Insert changelog entry or delete this section.

Author: OwenKephart

python_modules/dagster/setup.py

@@ -70,15 +70,14 @@ def get_version() -> str:
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
-        "Programming Language :: Python :: 3.14",
         "License :: OSI Approved :: Apache Software License",
         "Topic :: System :: Monitoring",
         "Topic :: Software Development :: Libraries :: Application Frameworks",
         "Operating System :: OS Independent",
     ],
     packages=find_packages(exclude=["dagster_tests*"]),
     include_package_data=True,
-    python_requires=">=3.10,<3.15",
+    python_requires=">=3.10,<3.14",
     install_requires=[
         # cli
         "click>=5.0,<9.0",