fix(BPDM): fixed the request structure of BPDM api (#928)

Reviewed-By: Phil Schneider <[email protected]>
Refs: #927

src/externalsystems/Bpdm.Library/Models/BpdmLegalEntityData.cs

@@ -111,5 +111,5 @@ public record BpdmLegalEntityData(
     BpdmLegalEntity LegalEntity,
     BpdmSite? Site,
     BpdmAddress Address,
-    bool OwnCompanyData
+    bool IsOwnCompanyData
 );