Remove 5.25 reference from 2.13 branch

Only need to check its compatible with LTS 5.26 version

Co-authored-by: Mats Rydberg <mats@neo4j.org>

Author: FlorentinD

gradle/dependencies.gradle

@@ -1,14 +1,7 @@
 ext {
-    neos = [
-        '5.25': '5.25.1',
-        '5.26': '5.26.1',
-    ]
-
-    neo4jDefault = project.hasProperty('isOpenGds') ? neos.'5.25' : neos.'5.26'
-
     ver = [
         'log4j'                : '2.20.0',
-        'neo4j'                : neo4jDefault,
+        'neo4j'                : '5.26.2',
         'scala'                : '2.13.11',
         'shiro'                : '2.0.1',
     ]