filelock: fix type annotation

Signed-off-by:  Eric Callahan <[email protected]>

moonraker/utils/filelock.py

@@ -13,15 +13,15 @@
 import contextlib
 import asyncio
 from . import ServerError
-from typing import Optional, Type
+from typing import Optional, Type, Union
 from types import TracebackType
 
 class LockTimeout(ServerError):
     pass
 
 class AsyncExclusiveFileLock(contextlib.AbstractAsyncContextManager):
     def __init__(
-        self, file_path: pathlib.Path, timeout: int = 0
+        self, file_path: pathlib.Path, timeout: Union[int, float] = 0
     ) -> None:
         self.lock_path = file_path.parent.joinpath(f".{file_path.name}.lock")
         self.timeout = timeout