Update edalize requirement to 0.2.4
Update edalize requirement to 0.2.4

Edalize 0.2.3 has a bug which prevents more than one script to run,
which is fixed in later versions.

Signed-off-by: Philipp Wagner <5a4b10454c30419e54a1570be358a516ff84bb63@lowrisc.org>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan