feat: upgrade to astro 4 (#18)

package.json

@@ -15,14 +15,14 @@
     "lint": "eslint ."
   },
   "dependencies": {
-    "@astrojs/mdx": "^1.0.0",
-    "@astrojs/rss": "^3.0.0",
-    "@astrojs/vue": "^3.0.0",
+    "@astrojs/mdx": "^2.0.3",
+    "@astrojs/rss": "^4.0.1",
+    "@astrojs/vue": "^4.0.6",
     "@fontsource-variable/fira-code": "^5.0.8",
     "@fontsource-variable/rubik": "^5.0.10",
     "@fontsource/fira-code": "^5.0.8",
     "@fontsource/rubik": "^5.0.11",
-    "astro": "^3.0.4",
+    "astro": "^4.0.8",
     "astro-seo-schema": "^3.0.0",
     "fuse.js": "^6.6.2",
     "rehype-external-links": "^2.1.0",
@@ -32,7 +32,7 @@
     "vue": "^3.3.4"
   },
   "devDependencies": {
-    "@astrojs/sitemap": "^3.0.0",
+    "@astrojs/sitemap": "^3.0.4",
     "@babel/core": "^7.22.11",
     "@iconify-json/ph": "^1.1.6",
     "@typescript-eslint/parser": "^6.5.0",
@@ -48,7 +48,7 @@
     "lint-staged": "^14.0.1",
     "prettier": "^3.0.3",
     "typescript": "^5.2.2",
-    "unocss": "^0.55.3",
+    "unocss": "^0.58.2",
     "vite": "^4.4.9",
     "volar-service-prettier": "^0.0.11",
     "volar-service-prettyhtml": "^0.0.11"