Added Warning for breaking changes in hubspot for refering custom objectTypes by base names

Author: Gaurav Kochar

src/connections/destinations/catalog/actions-hubspot-cloud/index.md

@@ -24,6 +24,13 @@ When you use the HubSpot Cloud Mode (Actions) destination, Segment sends your da
 > warning ""
 > **Behavioral Events (Legacy)** are only supported with [Hubspot Classic Destination](/docs/connections/destinations/catalog/hubspot/).
 
+> warning ""
+> After April 29, 2025, HubSpot will no longer support referrals to custom object types by their base name.
+> If you use **Upsert Custom Object Record** ensure you have selected **Object Type** and **ObjectType to associate** field from dropdown.
+> If you use **Custom Event V2** , ensure you have selected **Object Type** field from dropdown. 
+> If you use **Custom Object V2** , ensure you have selected **Object Type** and **To Object Type** field from dropdown. 
+> For More information, refer to hubspot documentation [here](https://developers.hubspot.com/changelog/breaking-change-removed-support-for-referencing-custom-object-types-by-base-name)
+
 
 ## Benefits of HubSpot Cloud Mode (Actions) vs HubSpot Classic
 HubSpot Cloud Mode (Actions) provides the following benefits over the classic HubSpot destination: