Bump astro from 5.2.5 to 5.3.0 in the minor group

Bumps the minor group with 1 update: [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro).


Updates `astro` from 5.2.5 to 5.3.0
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.3.0/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -22,7 +22,7 @@
     "@types/react-dom": "^19.0.3",
     "@vector-im/compound-design-tokens": "^3.0.1",
     "@vector-im/compound-web": "^7.6.2",
-    "astro": "^5.2.5",
+    "astro": "^5.3.0",
     "classnames": "^2.5.1",
     "modern-normalize": "^3.0.1",
     "nanostores": "^0.11.3",