Support scout 8

Author: chrysanthos

composer.json

@@ -21,7 +21,7 @@
     "require": {
         "php": "^7.4|^8.0|^8.1",
         "elastic/enterprise-search": "^7.1",
-        "laravel/scout": "^9.0"
+        "laravel/scout": "^8.0|^9.0"
     },
     "require-dev": {
         "orchestra/testbench": "^6.17",