correct single server to version 5.1

Author: transistive

.github/workflows/integration-test-single-server.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         php-version: ["8.0", "8.2"]
-        neo4j-version: ["4.4", "5.0", "5.6"]
+        neo4j-version: ["4.4", "5.1", "5.5"]
 
     services:
       neo4j: