build(deps-dev): bump astro from 6.1.4 to 6.1.8

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 6.1.4 to 6.1.8.
- [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@6.1.8/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 6.1.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -7,7 +7,7 @@
         "src/components/astro-github-api-plugin.astro"
     ],
     "devDependencies": {
-        "astro": "^6.1.4",
+        "astro": "^6.1.8",
         "prettier-plugin-astro": "^0.14.1"
     },
     "repository": {