build: bump Astro to v4.14.2 & use content layer (#355)

Bump Astro from v4.13 to v4.14.2 and use experimental
content layer api.

package.json

@@ -14,10 +14,10 @@
     "lint": "eslint ."
   },
   "dependencies": {
-    "@astrojs/check": "^0.9.1",
+    "@astrojs/check": "^0.9.2",
     "@astrojs/rss": "^4.0.7",
     "@resvg/resvg-js": "^2.6.2",
-    "astro": "^4.13.0",
+    "astro": "^4.14.2",
     "fuse.js": "^7.0.0",
     "lodash.kebabcase": "^4.1.1",
     "remark-collapse": "^0.1.2",
@@ -27,7 +27,7 @@
     "typescript": "^5.5.3"
   },
   "devDependencies": {
-    "@astrojs/react": "^3.6.1",
+    "@astrojs/react": "^3.6.2",
     "@astrojs/sitemap": "^3.1.6",
     "@astrojs/tailwind": "^5.1.0",
     "@tailwindcss/typography": "^0.5.13",