Bump astro from 5.12.0 to 5.12.3 in the dependencies group

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


Updates `astro` from 5.12.0 to 5.12.3
- [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@5.12.3/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.12.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "pa11y-ci": "npx pa11y-ci https://playground.htmlhint.com/"
   },
   "dependencies": {
-    "astro": "^5.12.0",
+    "astro": "^5.12.3",
     "bootstrap": "^5.3.7",
     "htmlhint": "^1.6.3"
   },