chore(deps): bump astro from 6.1.1 to 6.1.3 in the npm group (#1126)

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


Updates `astro` from 6.1.1 to 6.1.3
- [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@6.1.3/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 6.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm
...

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Author: dependabot[bot]

package-lock.json

@@ -16,7 +16,7 @@
   "dependencies": {
     "@astrojs/sitemap": "^3.7.2",
     "@astrojs/starlight": "^0.38.2",
-    "astro": "^6.1.1",
+    "astro": "^6.1.3",
     "sharp": "^0.34.5"
   },
   "devDependencies": {