Update webfonts-generator (#3504)
Update webfonts-generator (#3504)

Update webfonts-generator as it depends on handlebar < 4.0 which has a vulnerability
switchinnovations/pxt,Microsoft/pxt,Microsoft/pxt,playi/pxt,playi/pxt,switchinnovations/pxt,switchinnovations/pxt,switch-education/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,switch-education/pxt,playi/pxt,playi/pxt,switchinnovations/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt