Merge pull request #526 from l0b0/refactor/inline-dict-update

refactor: Inline `dict` update

Author: Jon Duckworth

pystac/link.py

@@ -250,9 +250,7 @@ def to_dict(self) -> Dict[str, Any]:
             dict: A serialization of the Link that can be written out as JSON.
         """
 
-        d: Dict[str, Any] = {"rel": self.rel}
-
-        d["href"] = self.get_href()
+        d: Dict[str, Any] = {"rel": self.rel, "href": self.get_href()}
 
         if self.media_type is not None:
             d["type"] = self.media_type