add updates libs

server/libs/cattrs/subclasses.py

@@ -0,0 +1,27 @@
+import sys
+
+if sys.version_info <= (3, 13):
+
+    def subclasses(cls: type) -> list[type]:
+        """A proxy for `cls.__subclasses__()` on older Pythons."""
+        return cls.__subclasses__()
+
+else:
+
+    def subclasses(cls: type) -> list[type]:
+        """A helper for getting subclasses of a class.
+
+        Filters out duplicate subclasses of slot dataclasses and attrs classes.
+        """
+        return [
+            cl
+            for cl in cls.__subclasses__()
+            if (
+                not (
+                    "__slots__" not in cl.__dict__
+                    and hasattr(cls, "__dataclass_params__")
+                    and cls.__dataclass_params__.slots
+                )
+                and not hasattr(cls, "__attrs_base_of_slotted__")
+            )
+        ]