Fix issue 1268 (#1269)

* Fix issue 1268
* Fix version added
* Add changelog fragment
* Add newline

Author: aopdal

changelogs/fragments/fix_issue_1268.yml

@@ -0,0 +1,2 @@
+minor_changes:
+      - Add ``related_object_type`` to ``netbox_custom_filed`` (https://github.com/netbox-community/ansible_modules/issues/1268)

plugins/modules/netbox_custom_field.py

@@ -66,6 +66,12 @@
         required: false
         type: str
         version_added: "3.7.0"
+      related_object_type:
+        description:
+          - The object type of the custom field (if any) (NetBox 4.0+)
+        required: false
+        type: str
+        version_added: "3.20.0"
       name:
         description:
           - Name of the custom field
@@ -255,6 +261,7 @@ def main():
                         type="str",
                     ),
                     object_type=dict(required=False, type="str"),
+                    related_object_type=dict(required=False, type="str"),
                     name=dict(required=True, type="str"),
                     label=dict(required=False, type="str"),
                     description=dict(required=False, type="str"),