es: Merge CR v.2 Spanish translation back into main (#1879)

This PR merges the Spanish (es) v.2 translation back to main.
This requires just a syntactical review, as the partial PRs into this
branch were reviewed already.

You can skim this PR with the [GitHub CLI](https://cli.github.com/):

gh pr diff 1879 | bat -l patch

#1463 #284

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Co-authored-by: David Martínez Martí <[email protected]>

Author: henrif75