[Tails-l10n] import-translations imports bad es.po

Hey!

When preparing the Tails 5.17.1 emergency release I got this error from
lint_po:

     ERROR: po/es.po:
             i18nspector is not happy:
                     E: perl-brace-format-string-unknown-argument msgid 
1d: count in msgstr[0] but not in msgid
     checked files are not clean.

So I reverted es.po to be able to continue.

You should be able to reproduce it by checking out the stable branch and
running:

     ./import-translations
     ./refresh-translations
     ./submodules/jenkins-tools/slaves/lint_po

Cheers!