Upgrade model-redis to ^1.4.0 and redis to ^6.1.0

model-redis 1.4.0 requires redis 6, so bump both together to keep a
single deduped redis version. Verified: unit tests pass (38), and the
real models load and run against live redis 7 on the new stack,
including model-redis 1.4.0's findOrphans().

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

nodejs/package.json

@@ -34,11 +34,11 @@
     "jquery": "^3.7.1",
     "ldapts": "^8.1.2",
     "linux-sys-user": "^1.2.0",
-    "model-redis": "^0.4.0",
+    "model-redis": "^1.4.0",
     "moment": "^2.30.1",
     "mustache": "^4.2.0",
     "p2psub": "^0.2.0",
-    "redis": "^5.10.0",
+    "redis": "^6.1.0",
     "socket.io": "^4.8.3",
     "tld-extract": "^2.1.0"
   },