Add the latam_spanish locale

[2br-2b]

Summary

Adds the new Spanish locale. Fixes #9688

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)

[Rapptz]

Rename it to latin_american_spanish.

[Rapptz]

Thanks.