Bump @metalsmith/layouts from 2.7.0 to 3.0.0

Bumps [@metalsmith/layouts](https://github.com/metalsmith/layouts) from 2.7.0 to 3.0.0.
- [Release notes](https://github.com/metalsmith/layouts/releases)
- [Changelog](https://github.com/metalsmith/layouts/blob/master/CHANGELOG.md)
- [Commits](metalsmith/layouts@v2.7.0...v3.0.0)

---
updated-dependencies:
- dependency-name: "@metalsmith/layouts"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "@metalsmith/drafts": "^1.3.0",
     "@metalsmith/excerpts": "^1.5.1",
     "@metalsmith/in-place": "^5.0.0",
-    "@metalsmith/layouts": "^2.7.0",
+    "@metalsmith/layouts": "^3.0.0",
     "@metalsmith/markdown": "^1.10.0",
     "@metalsmith/permalinks": "^3.2.0",
     "@tailwindcss/postcss": "^4.0.13",