change default port to 5002

Apple apparently now hogs localhost:5000 for their AirPlay devices.
https://stackoverflow.com/questions/70913242/access-to-localhost-was-denied-you-dont-have-authorisation-to-view-this-page-h
Given that many users are likely to serve displacy to their localhost, it might be nice to change the default port to something like 5002 (suggested above). Otherwise, users on macos Monterey will encounter a permission denied error (happened in my team).

spacy/displacy/__init__.py

@@ -80,7 +80,7 @@ def serve(
     minify: bool = False,
     options: Dict[str, Any] = {},
     manual: bool = False,
-    port: int = 5000,
+    port: int = 5002,
     host: str = "0.0.0.0",
 ) -> None:
     """Serve displaCy visualisation.