chore: update to Unity 6000.0.65f1 (#2467)

Author: github-actions[bot]

scripts/ci-env.ps1

@@ -11,7 +11,7 @@ switch ($name) {
         return "2022.3.62f3"
     }
     "unity6000.0" {
-        return "6000.0.64f1"
+        return "6000.0.65f1"
     }
     "unity6000.1" {
         return "6000.1.17f1"