MAINT: cleanup python 3.13 metadata and CI

Author: bsipocz

.github/workflows/python-tests.yml

@@ -68,19 +68,19 @@ jobs:
             python-version: '3.12'
             toxenv: py312-test-pytest82
           - os: macos-latest
-            python-version: '3.13-dev'
-            toxenv: py312-test-pytest83
+            python-version: '3.13'
+            toxenv: py313-test-pytest83
           - os: windows-latest
-            python-version: '3.13-dev'
-            toxenv: py312-test-pytestdev
+            python-version: '3.13'
+            toxenv: py313-test-pytestdev
           - os: macos-latest
             python-version: '3.11'
             toxenv: py311-test-pytestdev
           - os: ubuntu-latest
             python-version: '3.12'
             toxenv: py312-test-pytestdev-numpydev
           - os: ubuntu-latest
-            python-version: '3.13-dev'
+            python-version: '3.13'
             toxenv: py313-test-pytestdev
 
     steps:

setup.cfg

@@ -16,6 +16,7 @@ classifiers =
     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
     Topic :: Software Development :: Testing
     Topic :: Utilities