update-manager - en to uz translation catalogue (2 entries)

note: TRANSLATORS: download size of small updates, e.g. "250 kB"
en: %(size).0f kB | %(size).0f kB
uz[0]: %(size).0f КБ

note: TRANSLATORS: download size of updates, e.g. "2.3 MB"
en: %.1f MB
uz: %.1f MБ
