Update dependency into-stream to v9

Author: elastic-renovate-prod[bot]

package.json

@@ -44,6 +44,6 @@
   "dependencies": {
     "fast-deep-equal": "^3.1.3",
     "find-my-way": "^9.3.0",
-    "into-stream": "^6.0.0"
+    "into-stream": "^9.0.0"
   }
 }