Update greenlet version

Author: elacuesta

tox.ini

@@ -9,7 +9,8 @@ deps =
     pytest_twisted==1.14
     psutil==5.9.7
     playwright==1.57  # version must match the one installed with npm below
-    greenlet==3.1.1
+    greenlet==3.3.0; python_version >= "3.14"
+    greenlet==3.1.1; python_version < "3.14"
 allowlist_externals =
     npm
     npx