Deprecate set_data

Author: antonpirker

sentry_sdk/tracing.py

@@ -678,6 +678,12 @@ def set_tag(self, key, value):
 
     def set_data(self, key, value):
         # type: (str, Any) -> None
+        warnings.warn(
+            "`Span.set_data` is deprecated. Please use `Span.set_attribute` instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+
         # TODO-neel-potel we cannot add dicts here
         self.set_attribute(key, value)