Update versions/next.json for v7.1.0-beta.1

docs/versions/next.json

@@ -1 +1 @@
-{"version":"7.1.0-beta.0","info":{"plain":"- Settings: Add what's new page, remove release notes - [#23202](https://github.com/storybookjs/storybook/pull/23202), thanks [@kasperpeulen](https://github.com/kasperpeulen)!"}}
+{"version":"7.1.0-beta.1","info":{"plain":"- Addon-docs: Add opt-in table of contents - [#23142](https://github.com/storybookjs/storybook/pull/23142), thanks [@shilman](https://github.com/shilman)!\n- SyntaxHighlighter: Expose registerLanguage - [#23166](https://github.com/storybookjs/storybook/pull/23166), thanks [@ndelangen](https://github.com/ndelangen)!\n- Yarn: Fix pnp package resolution on Windows - [#23274](https://github.com/storybookjs/storybook/pull/23274), thanks [@valentinpalkovic](https://github.com/valentinpalkovic)!\n- Yarn: Pin version of @yarnpkg packages to support Node 16 - [#23330](https://github.com/storybookjs/storybook/pull/23330), thanks [@valentinpalkovic](https://github.com/valentinpalkovic)!"}}