Update name attribute for suburb_locality

[YingtingChen]

Change Description:

Update the name attribute from 'suburb_4th', 'suburb_3rd', 'suburb_2nd', ' suburb_1st' to 'name', using the new NZ Suburbs and Localities schema.

Notes for Testing:

All test (db+plugin) passed.

Note that there's one test commented out - https://github.com/linz/nz-buildings/blob/master/buildings/tests/gui/test_processes_update_reference_data_admin_bdys.py
I've checked that and make sure the failure was due to the previous found issue not the changes here. This test will be remove once we develop the new method for ref update.
...

Source Code Documentation Tasks:

- [ ] README updated (where applicable)
- [ ] CHANGELOG (Unreleased section) updated will update in the next PR
- [ ] Docstrings / comments included to help explain code

User Documentation Tasks:

- [ ] Confluence user guide updated (where applicable)

Testing Tasks:

• All tests are passing in development environment
• Reviewers assigned
  - [ ] Linked to main issue for ZenHub board

[Douglas-K]

All these changes look good. Code looks fine and the tests passed. Thanks Yingting.