fix: pa.DataFrameModel

Author: francesco086

test/data/schema/incompatible_with_sample_df.py

@@ -4,7 +4,7 @@
 from pandera.typing import Series
 
 
-class Schema(pa.SchemaModel):
+class Schema(pa.DataFrameModel):
     int1: Series[int] = pa.Field(nullable=False)
     float1: Series[int] = pa.Field()
     string1: Series[float] = pa.Field()

test/data/schema/invalid.py

@@ -4,7 +4,7 @@
 from pandera.typing import Series
 
 
-class SchemaWithWrongName(pa.SchemaModel):
+class SchemaWithWrongName(pa.DataFrameModel):
     int1: Series[int] = pa.Field(nullable=False)
     float1: Series[float] = pa.Field()
     string1: Series[str] = pa.Field()