fix: revert ioredis to v5 on the 10.x line

ioredis 6 is a major release (RESP3 by default, new retry and keepAlive
defaults, Node 20 minimum). Shipping it in the 10.0.1 patch made packages
that receive `ioConnection` and check it against their own ioredis v5
class (bentocache via @adonisjs/cache) fall through to creating a stray
client that dials 127.0.0.1:6379.

The ioredis 6 upgrade moves to the 11.x line.

Closes #77

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H3hvEz2HYq6kB8Bdwc1K14

Author: thetutlage

package-lock.json

@@ -66,7 +66,7 @@
   "dependencies": {
     "@poppinss/utils": "^7.0.1",
     "emittery": "^1.2.1",
-    "ioredis": "^6.0.0"
+    "ioredis": "^5.11.1"
   },
   "peerDependencies": {
     "@adonisjs/core": "^7.0.0-next.0 || ^7.0.0"