Refresh Python dependencies

Author: mdmintz

requirements.txt

@@ -4,7 +4,8 @@ packaging>=25.0
 setuptools~=70.2;python_version<"3.10"
 setuptools>=80.9.0;python_version>="3.10"
 wheel>=0.45.1
-attrs>=25.3.0
+attrs~=25.3.0;python_version<"3.9"
+attrs>=25.4.0;python_version>="3.9"
 certifi>=2025.10.5
 exceptiongroup>=1.3.0
 websockets~=13.1;python_version<"3.9"

setup.py

@@ -152,7 +152,8 @@
         'setuptools~=70.2;python_version<"3.10"',  # Newer ones had issues
         'setuptools>=80.9.0;python_version>="3.10"',
         'wheel>=0.45.1',
-        'attrs>=25.3.0',
+        'attrs~=25.3.0;python_version<"3.9"',
+        'attrs>=25.4.0;python_version>="3.9"',
         "certifi>=2025.10.5",
         "exceptiongroup>=1.3.0",
         'websockets~=13.1;python_version<"3.9"',