Remove config from exception when Hikari data source can't be created

[mdulac]

Problem

When creating a DataSource with DataSourceLayer.fromConfig with a wrong configuration (rejected by the server), the exception thrown contains all the configuration serialised and so could contain the password.
By default, if we just want to log what comes from Quill, the password could be leaked clear.

Solution

I removed the config serialised in the exception message to let the application log what it's relevant.

Notes

Additional notes.

Checklist

• Unit test all changes
• Update README.md if applicable
• Add [WIP] to the pull request title if it's work in progress
• Squash commits that aren't meaningful changes
• Run sbt scalariformFormat test:scalariformFormat to make sure that the source files are formatted

@getquill/maintainers

[guizmaii]

@mdulac Thanks for your contribution! ❤️