Bump @keystatic/astro in the keystatic group across 1 directory

Bumps the keystatic group with 1 update in the / directory: [@keystatic/astro](https://github.com/Thinkmill/keystatic/tree/HEAD/packages/astro).


Updates `@keystatic/astro` from 5.0.6 to 5.1.0
- [Changelog](https://github.com/Thinkmill/keystatic/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/Thinkmill/keystatic/commits/@keystatic/astro@5.1.0/packages/astro)

---
updated-dependencies:
- dependency-name: "@keystatic/astro"
  dependency-version: 5.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: keystatic
...

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

Author: dependabot[bot]

bun.lock

@@ -16,7 +16,7 @@
     "@astrojs/react": "^5.0.7",
     "@astrojs/rss": "^4.0.18",
     "@astrojs/sitemap": "^3.7.3",
-    "@keystatic/astro": "^5.0.6",
+    "@keystatic/astro": "^5.1.0",
     "@keystatic/core": "^0.5.50",
     "@resvg/resvg-js": "^2.6.2",
     "astro": "^6.4.7",