Has Caravel been hardened for 100M clock? <https://github.com/efabless/caravel/blob/main/openlane/user_project_wrapper/config.tcl#L34>

@Uriel Jaramillo made a physical test of a clock divider that works "well" at 90 MHz, after that frequency, the oscilloscope was not able to detect the output frequency, so that IC can't work properly after 90 MHz.