fix(deps): update astro monorepo dependencies

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
astro (source)	5.17.3 → 5.18.0
satori	^0.19.2 → ^0.21.0

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Release Notes

withastro/astro (astro)

v5.18.0

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Minor Changes

• #​15589 b7dd447 Thanks @​qzio! - Adds a new security.actionBodySizeLimit option to configure the maximum size of Astro Actions request bodies.

  This lets you increase the default 1 MB limit when your actions need to accept larger payloads. For example, actions that handle file uploads or large JSON payloads can now opt in to a higher limit.

  If you do not set this option, Astro continues to enforce the 1 MB default to help prevent abuse.

  // astro.config.mjs
  export default defineConfig({
    security: {
      actionBodySizeLimit: 10 * 1024 * 1024, // set to 10 MB
    },
  });

Patch Changes

• #​15594 efae11c Thanks @​qzio! - Fix X-Forwarded-Proto validation when allowedDomains includes both protocol and hostname fields. The protocol check no longer fails due to hostname mismatch against the hardcoded test URL.

vercel/satori (satori)

v0.21.0

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Features

• 10% perf improvements in the core lib (#​729) (4e761c6)

v0.20.0

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Features

• Add support for background size cover, contain and auto (#​728) (c78869b)

v0.19.3

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Bug Fixes

• Support xlinkHref attribute for SVG image elements (#​724) (f4729fe)

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