Jackspeak pinned to prevent build errors

[jmuzina]

Jackspeak is currently pinned to version 2.1.1 with resolutions in package.json to prevent errors building Storybook with Yarn (see why). 2.1.1 is 2 years old at this point.

Storybook has an issue tracking this and we are using their workaround for now, but we should move to newer versions of Jackspeak once the underlying issue is resolved and the Storybook issue is closed.