Add mapping for MINT_CODENAME_MAP 'zara'

[AkaneDev]

Adds a mapping for Linux Mint 22.2 “Zara” to the script
mapping zara to noble which i have ran the script on my own Linux Mint install and it installed without issues

[CLAassistant]

All committers have signed the CLA.

[AkaneDev]

It was failing before when i tried to install, when i added
MINT_CODENAME_MAP["zara"]="noble"
to the mint mappings, it installed perfectly fine

[SteampunkIslande]

Hi, same here, just added:

MINT_CODENAME_MAP["zena"]="noble"

for Linux Mint 22.3

I know, there are so many releases for Linux Mint, it's annoying to keep track of all of them...
Already had the issue with my previous installation, just edited the install script. No big deal but can be annoying.