Upgrade `emphasize`

[karlwilbur]

The emphasize package is currently locked to ^2.0.0.

gulp-reporter/package.json

Line 16 in 80560d8

"emphasize": "^2.0.0",

However, there have been multiple security-related updates to emphasize and its dependencies (such as highlight) since that version.

Ref:

• GHSA-7wwv-vh3v-89cq (highlight : >=9.0.0, < 10.4.1)
• GHSA-vfrc-7r7c-w9mx (highlight : >= 10.0.0, < 10.1.2)

Please update the emphasize package version dependency to ^4.2.0.