it actually depends on your wallet settings!
i am not sure if Electrum new version added a "spend unconfirmed transactions" or not and i have never checked it otherwise either. but my guess is that it will spend them.

if it doesn't spend unconfirmed transactions then what cpfreeplz is correct, the two transactions have nothing to do with each other.

but if it  does spend them then it depends on if your unconfirmed transaction had a change (which most of them have) and if you spend that change and with what fee.
if you spend it with a higher fee satisfying the Child Pays For Parent (CPFP) then it will "boost" that transaction too, helping both be confirmed at the same time. but you have to pay a much higher fee covering both transactions.