v1.2.1

Multiple version upgrades:

• #45 Upgrade axios to 0.21.1
• #46 Bump handlebars from 4.1.2 to 4.7.7
• #47 Bump ssri from 6.0.1 to 6.0.2
• #48 Bump lodash from 4.17.15 to 4.17.21
• #49 Bump y18n from 4.0.0 to 4.0.3