apply nit name suggestion

disnake/embeds.py

@@ -431,7 +431,7 @@ def set_footer(
             "text": str(text),
         }
 
-        result = self._handle_resource(icon_url, file, key="footer", strict=False)
+        result = self._handle_resource(icon_url, file, key="footer", required=False)
         if result is not None:
             self._footer["icon_url"] = result
 
@@ -650,7 +650,7 @@ def set_author(
             self._author["url"] = str(url)
 
         result = self._handle_resource(
-            icon_url if icon_url else None, file, key="author", strict=False
+            icon_url if icon_url else None, file, key="author", required=False
         )
         if result is not None:
             self._author["icon_url"] = result
@@ -887,9 +887,9 @@ def get_default_colour(cls) -> Optional[Colour]:
     get_default_color = get_default_colour
 
     def _handle_resource(
-        self, url: Optional[Any], file: File, *, key: _FileKey, strict: bool = True
+        self, url: Optional[Any], file: File, *, key: _FileKey, required: bool = True
     ) -> Optional[str]:
-        if strict:
+        if required:
             if not (url is MISSING) ^ (file is MISSING):
                 raise TypeError("Exactly one of url or file must be provided")
         else: