Bump astro from 4.15.5 to 4.15.6

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 4.15.5 to 4.15.6.
- [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/[email protected]/packages/astro)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -37,7 +37,7 @@
 		"@tailwindcss/aspect-ratio": "0.4.2",
 		"@tailwindcss/forms": "0.5.9",
 		"@tailwindcss/typography": "0.5.15",
-		"astro": "4.15.5",
+		"astro": "4.15.6",
 		"astro-capo": "0.0.1",
 		"astrojs-service-worker": "2.0.0",
 		"autoprefixer": "10.4.20",