Use non alternate name for Kyiv (GH-108533)

tzdata provides Kiev as an alternative to Kyiv:

https://sources.debian.org/src/tzdata/2023c-10/backward/?hl=314#L314

But Debian moved it to the tzdata-legacy package breaking the test:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050530

This patch switches to the name provided by tzdata.