chore: update dependencies in package.json and bun.lock, including better-auth to version 1.4.18, and add new packages for improved functionality

Backend/drizzle/meta/_journal.json

@@ -36,6 +36,13 @@
       "when": 1770410118567,
       "tag": "0004_sweet_kinsey_walden",
       "breakpoints": true
+    },
+    {
+      "idx": 5,
+      "version": "7",
+      "when": 1770412956419,
+      "tag": "0005_sudden_corsair",
+      "breakpoints": true
     }
   ]
 }