Release 15.10.60

• Upgrade prettier 2.0.2 -> 2.0.4 (6c5493a)
• Upgrade husky 4.2.3 -> 4.2.5 (6bba312)
• Upgrade eslint-plugin-html 6.0.0 -> 6.0.1 (e07a11d)
• Upgrade core-js 3.6.4 -> 3.6.5 (7780eb2)