Prefer sphinx-intl 2.3.0

This version performs .po file updates in parallel, thus speeding up the
process of moving to new versions of Python and updating our translation
files.

Signed-off-by: Rodrigo Tobar <[email protected]>

Author: rtobar

requirements.txt

@@ -10,7 +10,7 @@ potodo
 powrap
 python-docs-theme>=2022.1
 setuptools
-sphinx-intl
+sphinx-intl>=2.3.0
 pre-commit
 sphinx-autorun
 sphinxemoji