[cd] Bump CIRCT from firtool-1.75.0 to firtool-1.108.0#2203

bar-tender wants to merge 1 commit intomainucb-bar/chipyard:mainfrom

cd/update-circt-from-firtool-1.75.0-to-firtool-1.108.0ucb-bar/chipyard:cd/update-circt-from-firtool-1.75.0-to-firtool-1.108.0Copy head branch name to clipboard