[MAINTENANCE] Bump Marshmallow upper bound to work with Airflow ope…

…rator (#5952)

great_expectations/render/types/__init__.py

@@ -610,7 +610,7 @@ def clean_null_attrs(self, data: dict, **kwargs: dict) -> dict:
         their values are None."""
         data = deepcopy(data)
         for key in RenderedAtomicValueSchema.REMOVE_KEYS_IF_NONE:
-            if key == "graph" and key in data and data[key].graph is None:
+            if key == "graph" and key in data and data[key]["graph"] is None:
                 data.pop(key)
             elif key in data and data[key] is None:
                 data.pop(key)

requirements.txt

@@ -9,7 +9,7 @@ jinja2>=2.10
 jsonpatch>=1.22
 jsonschema>=2.5.1
 makefun>=1.7.0,<2
-marshmallow>=3.7.1,<3.9.0
+marshmallow>=3.7.1,<4.0.0
 mistune>=0.8.4
 nbformat>=5.0
 notebook>=6.4.10