build-sass: Prepare 3.0.0 release

[aduth]

🛠 Summary of changes

Includes changes to prepare for a release of @18f/identity-build-sass:

• Bump dependencies
• Bump version
• Include version in CHANGELOG.md

📜 Testing Plan

Verify no regressions impacted by upgraded dependencies, e.g. can make run after installing.

Note that updating browserslist will have had an impact on supported browsers, which is intended / expected.

browsers.json:

- ["and_chr 119","and_uc 15.5","android 119","chrome 118","chrome 117","chrome 116","chrome 114","chrome 109","edge 118","edge 117","firefox 118","ios_saf 17.0","ios_saf 16.6-16.7","ios_saf 16.3","ios_saf 16.1","ios_saf 15.6-15.7","op_mob 73","opera 102","safari 17.0","safari 16.6","safari 15.6","samsung 22"]
+ ["and_chr 120","and_uc 15.5","chrome 120","chrome 119","chrome 118","chrome 109","edge 120","edge 119","firefox 120","ios_saf 17.2","ios_saf 17.1","ios_saf 16.6-16.7","ios_saf 16.3","ios_saf 16.1","ios_saf 15.6-15.8","op_mob 73","opera 105","opera 104","safari 17.1","safari 16.6","samsung 23"]

[aduth]

🚀 Published to NPM as @18f/identity-build-sass@3.0.0

https://www.npmjs.com/package/@18f/identity-build-sass