UML-3137 Move DNS to region

[ntse]

Purpose

Briefly describe the purpose of the change, and/or link to the JIRA ticket for context

Fixes UML-####

Approach

Explain how your code addresses the purpose of the change

Learning

Any tips and tricks, blog posts or tools which helped you. Plus anything notable you've discovered about the Use a Lasting Power of Attorney service

Checklist

• I have performed a self-review of my own code
• I have added relevant logging with appropriate levels to my code
• New event_codes have been documented on the wiki page
• I have updated documentation (Confluence/GitHub wiki/tech debt doc) where relevant
• I have added tests to prove my work
• I have added welsh translation tags and updated translation files
• I have run an accessibility tool on any pages I have made changes to and fixed any issues found
• I have notified the Interaction Designer of any content changes so that appropriate screenshots/flow diagram changes can be made
• The product team have tested these changes

[codecov]

Codecov Report

Merging #2376 (db0cb32) into main (5ae1593) will decrease coverage by 0.08%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

❗ Current head db0cb32 differs from pull request most recent head b9dfd18. Consider uploading reports for the commit b9dfd18 to get more accurate results

@@             Coverage Diff              @@
##               main    #2376      +/-   ##
============================================
- Coverage     92.03%   91.96%   -0.08%     
+ Complexity     1463     1455       -8     
============================================
  Files           279      274       -5     
  Lines          6655     6597      -58     
============================================
- Hits           6125     6067      -58     
  Misses          513      513              
  Partials         17       17              

see 5 files with indirect coverage changes