Update translations for settings labels to use MiB instead of MB

What does this MR do and why?

In !120287 (merged) I updated a few labels to use a more precise MiB storage size notation (instead of MB) . E.g.

- msgid "Max file size is 200 KB."
+ msgid "Max file size is 200 KiB."

locale/uk/gitlab.po

This MR is an attempt to preserve the translations for those strings, which would be unfairly deprecated otherwise. So I go through translation files and do something like:

- msgid "Max file size is 200 KB."
- msgstr "Максимальний розмір файлу 200 KB."
+ msgid "Max file size is 200 KiB."
+ msgstr "Максимальний розмір файлу 200 KiB."

Generally I used translations for KiB/MiB/GiB that were already present in the translations. E.g. French already had

msgid "%{size} MiB"
msgstr "%{size}°Mio"

so I reused the Mio for settings titles too. With two additions: Ukrainian and Spanish had wrong translations for the raw %{value} KiB/MiB/GiB, which I also fixed in this MR.

Here are some links I used during this update:

• Ukrainian would use КіБ — https://uk.wikipedia.org/wiki/%D0%9A%D1%96%D0%B1%D1%96%D0%B1%D0%B0%D0%B9%D1%82
• Russian would use either КиБ or international KiB — I used КиБ because translations were already using КиБ — https://ru.wikipedia.org/wiki/%D0%9A%D0%B8%D0%B1%D0%B8%D0%B1%D0%B0%D0%B9%D1%82
• French seem to use either Kio or KiB interchangeably — I used Kio because translations were using Ko for kilobytes — https://context.reverso.net/translation/english-french/kibibyte
• Portuguese seem to use KiB — https://pt.wikipedia.org/wiki/Quibiocteto
• Spanish would use either KiB or Kio — there was no previous usage, I used international KiB — https://es.wikipedia.org/wiki/Kibibyte
• in other languages I used international KiB because they were already using KB so I assumed they are fine with international KiB either

Related to #407872

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en	fr	uk

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