Update RC to 5.12.0

Author: jjaderberg

gradle/dependencies.gradle

@@ -12,7 +12,7 @@ ext {
         '5.9': properties.getOrDefault('neo4jVersion59', '5.9.0'),
         '5.10': properties.getOrDefault('neo4jVersion510', '5.10.0'),
         '5.11': properties.getOrDefault('neo4jVersion511', '5.11.0'),
-        '5.11': properties.getOrDefault('neo4jVersion511', '5.11.0'),
+        '5.12': properties.getOrDefault('neo4jVersion511', '5.12.0'),
     ]
 
     neo4jDefault = neos.'4.4'
@@ -33,6 +33,7 @@ ext {
         '5.9': '2.13.10',
         '5.10': '2.13.10',
         '5.11': '2.13.10',
+        '5.12': '2.13.10',
     ]
 
     log4js = [
@@ -48,6 +49,7 @@ ext {
         '5.9': '2.20.0',
         '5.10': '2.20.0',
         '5.11': '2.20.0',
+        '5.12': '2.20.0',
     ]
 
     ver = [