Update dependencies + temp. remove art, comms

package.json

@@ -15,16 +15,12 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/mdx": "^5.0.3",
-    "@astrojs/rss": "^4.0.18",
-    "@astrojs/sitemap": "^3.7.2",
-    "astro": "^6.1.3",
-    "better-auth": "^1.5.5",
-    "decap-cms-app": "^3.10.1",
-    "sharp": "^0.34.3"
+    "@astrojs/mdx": "^7.0.5",
+    "@astrojs/rss": "^4.0.19",
+    "@astrojs/sitemap": "^3.7.3",
+    "astro": "^7.1.6"
   },
   "devDependencies": {
-    "@types/node": "^25.2.1",
-    "astro-compress": "2.3.9"
+    "@types/node": "^26.1.2"
   }
 }