fix(deps): bump axios to ^1.16.0 to remediate high-severity CVEs

Addresses Dependabot alerts #986-992: prototype pollution in
axios <1.16.0 enabling credential theft, MITM, and DoS. Updates
mem0-ts, openmemory/ui, and server/dashboard.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/dashboard/package.json

@@ -36,7 +36,7 @@
     "@radix-ui/react-tooltip": "^1.0.7",
     "@reduxjs/toolkit": "^2.3.0",
     "@tanstack/react-table": "^8.17.3",
-    "axios": "^1.15.2",
+    "axios": "^1.16.0",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.0",
     "cmdk": "^1.0.0",