Issue
I was trying to change the login and password for elastic search database connection from a deployed application, but it seems like it is not possible. Even after checking the documentation, I couldn't find any way to create a new datasource or update the authentication details. It looks like only developers have the ability to edit the app and modify the datasource.
Resolution
Unfortunately, it is not possible to create a datasource or change the login and password for an Elastic Search database connection from a deployed application. The only way to do so is by editing the app as a developer and updating the datasource manually. There are no code examples necessary as this is not a programming issue but rather a limitation of the platform.