Fix CORS origin localhost entry

[cherylli]

Description

Current CORS origin entry for localhost is wrong - http://localhost:* does not match all port, its just a static string, we need to use regex

Issue link

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature updates / changes
• Tests
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

tested on a dummy next.js client component (as CORS has no effect on server components)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have updated the change log

[curtwl]

Connecting to frontend works and tests all pass

[cherylli]

@timDeHof @curtwl are you able to (re-)review this? Thanks! Reviews got staled after merging dev 😂

[Dan-Y-Ko]

Tested with a dummy fe app:

works, getting 200 as expected.

[timDeHof]

I got it to work with the curl command curl -v --request OPTIONS 'http://localhost:8000' -H 'Origin: http://localhost:3045' -H 'Access-Control-Request-Method: Get' with the server running. I got a HTTP/1.1 204 No Content response.