fix(deps): update Astro to 6.0.4 and fix security vulnerabilities

- Update astro from 4.16.19 to 6.0.4 (fixes XSS, auth bypass, and other CVEs)
- Update @astrojs/svelte from 7.2.5 to 8.0.0
- Update svelte from 5.45.5 to 5.53.11
- Add pnpm override for lodash >=4.17.23 (prototype pollution fix)

All 12 vulnerabilities resolved.

Author: TellMeAlex

package.json

@@ -10,17 +10,22 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/svelte": "^7.2.2",
-    "astro": "^4.16.19",
+    "@astrojs/svelte": "^8.0.0",
+    "astro": "^6.0.4",
     "gsap": "^3.13.0",
     "lucide-svelte": "^0.555.0",
-    "svelte": "^5.45.5",
+    "svelte": "^5.53.11",
     "tailwindcss": "^4.1.17"
   },
   "devDependencies": {
-    "@astrojs/check": "^0.9.4",
+    "@astrojs/check": "^0.9.7",
     "@tailwindcss/postcss": "^4.1.17",
     "postcss": "^8.5.6",
     "typescript": "^5.7.2"
+  },
+  "pnpm": {
+    "overrides": {
+      "lodash": ">=4.17.23"
+    }
   }
 }