Fix Italian translation for "%s and %s"

Author: hugovk

src/humanize/locale/it_IT/LC_MESSAGES/humanize.po

@@ -361,4 +361,4 @@ msgstr "ieri"
 #: src/humanize/time.py:534
 #, python-format
 msgid "%s and %s"
-msgstr ""
+msgstr "%s e %s"