Update ./docs/versions/next.json for v8.0.0-alpha.7

docs/versions/next.json

@@ -1 +1 @@
-{"version":"8.0.0-alpha.6","info":{"plain":"- NextJS: Autoconfigure public directory for new projects - [#25279](https://github.com/storybookjs/storybook/pull/25279), thanks [@shilman](https://github.com/shilman)!\n- Vite: Fix pre-transform error in Vite 5 - [#25329](https://github.com/storybookjs/storybook/pull/25329), thanks [@yannbf](https://github.com/yannbf)!\n- Vue3: Fix pnp by making compiler-core a dependency - [#25311](https://github.com/storybookjs/storybook/pull/25311), thanks [@shilman](https://github.com/shilman)!"}}
+{"version":"8.0.0-alpha.7","info":{"plain":"- Addon-Docs: Upgrade to MDX3 - [#25303](https://github.com/storybookjs/storybook/pull/25303), thanks [@yannbf](https://github.com/yannbf)!\n- CLI: Add Storyshots migration notice - [#25327](https://github.com/storybookjs/storybook/pull/25327), thanks [@yannbf](https://github.com/yannbf)!\n- CLI: Fix regex used in upgrade command - [#25284](https://github.com/storybookjs/storybook/pull/25284), thanks [@yannbf](https://github.com/yannbf)!\n- CLI: Remove --use-npm flag - [#25414](https://github.com/storybookjs/storybook/pull/25414), thanks [@yannbf](https://github.com/yannbf)!\n- Core: Remove unused warnOnLegacyHierarchySeparator type - [#25416](https://github.com/storybookjs/storybook/pull/25416), thanks [@yannbf](https://github.com/yannbf)!\n- Core: Remove vite plugins and drop Vite 3 support - [#25427](https://github.com/storybookjs/storybook/pull/25427), thanks [@kasperpeulen](https://github.com/kasperpeulen)!\n- Maintenance: Add comment to deprecation notice in Button component - [#25411](https://github.com/storybookjs/storybook/pull/25411), thanks [@yannbf](https://github.com/yannbf)!\n- UI: Fix about page layout - [#25396](https://github.com/storybookjs/storybook/pull/25396), thanks [@cdedreuille](https://github.com/cdedreuille)!\n- Viewport: Store viewport, rotation in globals - [#25423](https://github.com/storybookjs/storybook/pull/25423), thanks [@shilman](https://github.com/shilman)!\n- Vite: Fix Vite 5 CJS warnings - [#25005](https://github.com/storybookjs/storybook/pull/25005), thanks [@JReinhold](https://github.com/JReinhold)!"}}