Remove invalid supports_diff parameter (v1.3.2)

- AnsibleModule.__init__() does not accept supports_diff or supports_diff_mode
- Diff mode support is declared via attributes in DOCUMENTATION
- This was the actual root cause of the error
- Bump version to 1.3.2

plugins/modules/nsupdate_zone.py

@@ -923,7 +923,6 @@ def main() -> None:
             dns_server=dict(type='str')
         ),
         supports_check_mode=True,
-        supports_diff=True,
         required_together=[
             ['key_name', 'key_secret']
         ]