chore: sync version to 2.12.0 (#59)

Cherry-picked from release/2.12.x (release v2.12.0)
Original commit: d20b352

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

apps/streaming-demo/package.json

@@ -11,10 +11,10 @@
     "runtime": "ts-node src/runtime-server.ts"
   },
   "dependencies": {
-    "@enclave-vm/broker": "2.11.0",
-    "@enclave-vm/client": "2.11.0",
-    "@enclave-vm/types": "2.11.0",
-    "@enclave-vm/core": "2.11.0",
+    "@enclave-vm/broker": "2.12.0",
+    "@enclave-vm/client": "2.12.0",
+    "@enclave-vm/types": "2.12.0",
+    "@enclave-vm/core": "2.12.0",
     "express": "^4.21.0",
     "zod": "^3.24.0"
   },