add KVS record_exists not implemented

Author: vdusek

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     "apify-client>=1.11.0",
     "apify-shared>=1.3.0",
     "cachetools>=5.5.0",
-    "crawlee@git+https://github.com/apify/crawlee-python.git@new-storage-clients",
+    "crawlee@git+https://github.com/apify/crawlee-python.git@bc50990dd09eb5c2b66783b2fa62a8bc689a7737",
     "cryptography>=42.0.0",
     "httpx>=0.27.0",
     # TODO: ensure compatibility with the latest version of lazy-object-proxy

src/apify/storage_clients/_apify/_key_value_store_client.py

@@ -199,6 +199,12 @@ async def iterate_keys(
 
         await self._update_metadata()
 
+    @override
+    async def record_exists(self, key: str) -> bool:
+        raise NotImplementedError(
+            'Checking if a record exists is currently not supported in the Apify storage client. '
+        )
+
     async def get_public_url(self, key: str) -> str:
         """Get a URL for the given key that may be used to publicly access the value in the remote key-value store.