chore(deps): update dependency astro to v6.3.7

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
astro (source)	6.3.6 → 6.3.7

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Release Notes

withastro/astro (astro)

v6.3.7

Compare Source

Patch Changes

• #​16821 9c76b12 Thanks @​astrobot-houston! - Fixes request body handling in the Node adapter when req.body is a Buffer, Uint8Array, or ArrayBuffer. Previously, binary body data was incorrectly JSON-stringified (producing {"type":"Buffer","data":[...]}) instead of being passed through directly. This affected libraries like serverless-http that set req.body to a Buffer.

• #​16785 de96360 Thanks @​astrobot-houston! - Fixes vite.build.minify, vite.build.sourcemap, and vite.build.rollupOptions.output (e.g. compact) being ignored for client-side builds. These top-level Vite build options are now properly forwarded to the client environment, with environment-specific overrides (vite.environments.client.build.*) taking priority when set.

• #​16819 b5dd8f1 Thanks @​astrobot-houston! - Fixes custom elements in MDX files bypassing the renderer pipeline. Custom elements (tags containing hyphens like <my-element>) in .mdx files are now routed through registered renderers for SSR, matching the behavior of .astro files. If no renderer claims the element, it falls back to rendering as raw HTML.

• #​16808 765896c Thanks @​ematipico! - Fixes dynamic routes returning 400 Bad Request when the URL contains a literal % character, such as paths built with encodeURIComponent('%?.pdf')

• #​16804 90d2aca Thanks @​jp-knj! - Fixes a v6 regression where astro:i18n could not be imported from client <script> blocks.

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