UML-3738: eventbridge & lambda permissions

[jay-whitwell]

Purpose

Adds permissions for the EventBus & SQS to communicate with Lambda

Fixes UML-3738

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 (tick/delete or strikethrough as appropriate)

• I have performed a self-review of my own code
• I have added tests to prove my work
• I have added relevant and appropriately leveled logging, without PII, to my code
• New event_codes have been documented on the wiki page
• I have updated documentation (Confluence/GitHub wiki/tech debt doc)
• 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

All modified and coverable lines are covered by tests ✅

Project coverage is 91.95%. Comparing base (3a5f6b6) to head (d44a3b6).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #3014   +/-   ##
=========================================
  Coverage     91.95%   91.95%           
  Complexity     1781     1781           
=========================================
  Files           390      390           
  Lines          8276     8276           
=========================================
  Hits           7610     7610           
  Misses          649      649           
  Partials         17       17           

Flag	Coverage Δ
use-an-lpa-admin	78.85% <ø> (ø)
use-an-lpa-api	97.31% <ø> (ø)
use-an-lpa-front	90.70% <ø> (ø)