feat: add support for propcache v1.0.0

v1.0.0 moved the public api to propcache.api

see aio-libs/propcache#21
see aio-libs/propcache#18
see aio-libs/propcache#19

Author: bdraco

src/cached_ipaddress/_compat.py

@@ -0,0 +1,8 @@
+"""Compat for external lib versions."""
+
+try:
+    from propcache.api import cached_property
+except ImportError:
+    from propcache import cached_property
+
+__all__ = ("cached_property",)

src/cached_ipaddress/ipaddress.py

@@ -5,7 +5,7 @@
 from ipaddress import AddressValueError, IPv4Address, IPv6Address, NetmaskValueError
 from typing import Any, Optional, Union
 
-from propcache import cached_property
+from ._compat import cached_property
 
 if sys.version_info < (3, 9):
     cache = lru_cache(maxsize=None)