Update the Seti icon theme

[fwcd]

I have added a Kotlin icon to the Seti theme as described here:

https://github.com/Microsoft/vscode/blob/6f3f9edcfa917530562d83bc4744fcdbe9159404/extensions/theme-seti/icons/vs-seti-icon-theme.json#L2-L8

The PR was recently merged, so would it be possible to pull the current version of the seti-ui repository?

[vscodebot[bot]]

(Experimental duplicate detection) Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Remove Seti icon theme and/or replace it (#53538)