New review comment by mhmdanas on void-packages repository

https://github.com/void-linux/void-packages/pull/42529#discussion_r1227987897

Comment:
> Hrm, popcorn shows 2 installed unixodbc packages and no firebird3. I wonder whether firebird's executable should be renamed instead.

Those two could have been me. :P

Anyway, I went ahead and renamed `firebird3`'s `isql` to `isql-fb`.