chore(deps): bump the npm group with 3 updates

Bumps the npm group with 3 updates: [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight), [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) and [prettier](https://github.com/prettier/prettier).


Updates `@astrojs/starlight` from 0.38.2 to 0.38.3
- [Release notes](https://github.com/withastro/starlight/releases)
- [Changelog](https://github.com/withastro/starlight/blob/main/packages/starlight/CHANGELOG.md)
- [Commits](https://github.com/withastro/starlight/commits/@astrojs/starlight@0.38.3/packages/starlight)

Updates `astro` from 6.1.3 to 6.1.5
- [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@6.1.5/packages/astro)

Updates `prettier` from 3.8.1 to 3.8.2
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.8.1...3.8.2)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-version: 0.38.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm
- dependency-name: astro
  dependency-version: 6.1.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm
- dependency-name: prettier
  dependency-version: 3.8.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: npm
...

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

Author: dependabot[bot]

package-lock.json

@@ -15,12 +15,12 @@
   },
   "dependencies": {
     "@astrojs/sitemap": "^3.7.2",
-    "@astrojs/starlight": "^0.38.2",
-    "astro": "^6.1.3",
+    "@astrojs/starlight": "^0.38.3",
+    "astro": "^6.1.5",
     "sharp": "^0.34.5"
   },
   "devDependencies": {
-    "prettier": "^3.8.1",
+    "prettier": "^3.8.2",
     "prettier-plugin-astro": "^0.14.0"
   }
 }