CI: Verify support for Python 3.13

Author: amotl

.github/workflows/tests.yml

@@ -21,7 +21,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-20.04"]
-        python-version: ["3.6", "3.12"]
+        python-version: ["3.6", "3.13"]
       fail-fast: false
 
     env:

setup.py

@@ -78,6 +78,7 @@
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Topic :: Communications",
         "Topic :: Database",
         "Topic :: Internet",