ES PHP dependency update to latest - some final clean ups

Author: pdphilip

composer.json

@@ -24,7 +24,7 @@
     "illuminate/container": "^10.0|^11.0",
     "illuminate/database": "^10.0|^11.0",
     "illuminate/events": "^10.0|^11.0",
-    "elasticsearch/elasticsearch": "^8.12"
+    "elasticsearch/elasticsearch": "^8.15"
   },
   "require-dev": {
     "orchestra/testbench": "^9.0.0||^8.22.0",