[DEV-107] Update Ktor to 2.3.8

[zarakay]

Description

Updating Ktor to 2.3.8. This fixes an issue in Evolve App Server where graphql requests become blocked until a user interaction. See ticket for more details

Checklist

If any of these are not applicable, strikethrough the line ~like this~. Do not delete it!. Let the reviewer decide if you should have done it.

Code

• I have performed a self review of my own code (including checking issues raised when creating the PR).
• I have added/updated unit tests for these changes, and if not I have explained why they are not necessary. - N/A
• I have commented my code in any hard-to-understand or hacky areas. - N/A
• I have handled all new warnings generated by the compiler or IDE.
• I have rebased onto the target branch (usually main).

Documentation

• I have updated the changelog. N/A
• I have updated any documentation required for these changes.

Breaking Changes

• I have considered if this is a breaking change and will communicate it with other team members if so.

Please leave a summary of the breaking changes here. This is useful for the reviewer, but also is useful for communication to the team when merged (e.g. you could copy and paste the summary into slack).