Release 15.10.96

• Upgrade eslint-plugin-html 6.1.0 -> 6.1.1 (6623ab5)
• Upgrade core-js 3.6.5 -> 3.8.0 (0aba2fb)
• Upgrade execa 4.1.0 -> 5.0.0 (e5e766d)
• Disable no-return-await (1e01513)
• Upgrade prettier 2.2.0 -> 2.2.1 (c6caf30)
• Upgrade prettier 2.1.2 -> 2.2.0 (dd97883)
• Fix default-param-last (4aa6c93)
• Upgrade eslint-config-standard 16.0.1 -> 16.0.2 (934717c)
• Add no-nonoctal-decimal-escape (046d33e)
• Upgrade eslint 7.12.1 -> 7.14.0 (4bf7e39)
• Improve no-mutation rule (a614cd7)
• Add enabled rule (1090741)
• Upgrade @ehmicky/dev-tasks 0.31.76 -> 0.31.77 (6464bc5)