8.1.0-alpha.6

• CLI: Add --config-dir flag to migrate command - #26721, thanks @yannbf!
• Core: Add duration and onClick support to Notification API and improve Notification UI - #26696, thanks @ghengeveld!
• Dependency: Bump es-module-lexer - #26737, thanks @valentinpalkovic!
• Dependency: Update globby dependency - #26733, thanks @valentinpalkovic!
• Dependency: Update postcss-loader in Next.js framework - #26707, thanks @valentinpalkovic!
• Next.js: Fix next/font usage on Windows machines - #26700, thanks @valentinpalkovic!
• Webpack: Fix sourcemap generation in webpack react-docgen-loader - #26676, thanks @valentinpalkovic!