fix(spec): hotfix on pydantic model to be able to read new attrs_spec

format

Author: ltroussellier

src/esgvoc/api/project_specs.py

@@ -50,17 +50,17 @@ class AttributeProperty(BaseModel):
     A NetCDF global attribute property specification.
     """
 
-    source_collection: str
+    source_collection: str | None
     "The project collection that originated the property."
     is_required: bool
     "Specifies if the attribute must be present in the NetCDF file."
-    value_type: str
+    attr_field_value_type: str
     "The type of the attribute value."
     specific_key: str | None = None
     "Specifies a specific key in the collection."
-    field_name: str | None = None
+    attr_field_name: str | None = None
     "The name of the attribute field."
-    default_value: str | None = None
+    attr_field_na_value: str | None = None
     "The default value for the attribute."