Objects satisfying the core.types.Lock interface should also be hashable (#11333)

* Add __hash__ to core.types.Lock protocol

* Implement hash in `Lock` protocol

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: jonathandung

xarray/core/types.py

@@ -379,3 +379,5 @@ def acquire(self, *args, **kwargs) -> Any: ...
     def release(self) -> None: ...
     def __enter__(self) -> Any: ...
     def __exit__(self, *args, **kwargs) -> None: ...
+    def __hash__(self) -> int:
+        return super().__hash__()