update gradle versions

Author: hauner

src/testInt/groovy/io/openapiprocessor/gradle/support/Gradle.groovy

@@ -27,7 +27,8 @@ class Gradle {
         '8.1', '8.1.1',
         '8.2', '8.2.1',
         '8.3',
-        '8.4'
+        '8.4',
+        '8.5'
     ]
 
     static List<String> VERSIONS_7 = [