fix: categories primary key

Author: taheeraahmed

src/datasync/nva/nva.py

@@ -95,7 +95,7 @@ def nva(
             get_resources(client, institution_code),
             name="resources",
             write_disposition="replace",
-            primary_key="identifier",
+            primary_key="id",
             max_table_nesting=1,
         )
 
@@ -121,7 +121,7 @@ def nva(
             get_categories(client),
             name="categories",
             write_disposition="replace",
-            primary_key="identifier",
+            primary_key="_dlt_id",
             max_table_nesting=1,
         )