This change has already been made.

On Thu, May 26, 2022, 21:06 Roman Dmytriv via tz <tz@iana.org> wrote:
Hello IANA team! 

"After Ukraine's 1991 independence, the Ukrainian government introduced the national rules for transliteration of geographic names into the Latin alphabet for legislative and official acts in October 1995,[23] according to which the Ukrainian name Київ is romanized as Kyiv. These rules are applied for place names and addresses, as well as personal names in passports, street signs, and so on."

I know you are all busy, but you made a mistake in the timezone name.
Just want to make a request to change "Kiev" to "Kyiv". 

I will be grateful for the answer. Thank you!

Best regards,

Roman Dmytriv
tel: +380633709302