CLDR-14054 minimumdigitgrouping for es-419, es-US & es-MX

[AEApple]

Update minimumdigitgrouping for es-419, es-US & es-MX per language specialist feedback that Spanish in Latin America uses minimum digit grouping of 1.

I have updated the two other Latin America Spanish variants since our language specialist confirmed that minimum grouping should be 1 for all Latin American Spanish locales, but let me know if you are concerned and I can update the PR. I will update the ticket with sources for each country to demonstrate usage.

Checklist

• Issue filed: https://unicode-org.atlassian.net/browse/CLDR-14054
• Updated PR title and link in previous line to include Issue number

[stenshamn]

Technically you could have removed the entry entirely in es_MX and es_US and it would have inherited from es_419, but I think this works too. @srl295 , what do you think?

[AEApple]

The Maven checks are failing. How do I resolve this?

[pedberg-icu]

The Maven checks are failing. How do I resolve this?

This needs to be (1) rebased onto latest master to pick up a fix from another recent PR, and (2) squashed. The fastest way to do this for now is just to create another PR based on latest master. I have done this in #1009 so I will close this one and we can use that one instead.

[pedberg-icu]

Technically you could have removed the entry entirely in es_MX and es_US and it would have inherited from es_419, but I think this works too. @srl295 , what do you think?

It is fine to leave them here for now, they will likely be removed when we do locale minimization