Investigate the use of require and module export in startServer.js

[DarioR01]

Is your feature request related to a problem? Please describe.
After a discussion about upgrading eslint-config-airbnb to v19. As pointed out by the new rule import/no-import-module-exports. We should not import a module that has been exported with the module export.

Describe the solution you'd like
Please investigate the use of require to import the modules in startServer.js that are exported with a module.export method and implement this solution if everything works as expected.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Testing notes
[Tester to complete]

Dev insight: Will Cypress tests be required or are unit tests sufficient? Will there be any potential regression? etc

• This feature is expected to need manual testing.

Checklist

• (BBC contributors only) This issue follows the repository use guidelines

Additional context
Add any other context or screenshots about the feature request here.