fix(i18n): set "locales" as root dir

[craicoverflow]

I did some investigation and believe that there are no issues in any libraries we are using and this could be resolved by changing the root directory of the locales.

go-i18n loads files from the root "locales" directory. The same root should be used when walking the file tree.

Closes #828

Verification Steps

On a Windows machine do the following:

1. Run rhoas
2. If successful, the CLI will print the help text to the console.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation change
• Other (please specify)

Checklist

• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer