update the version to 4.4.38 (#187)

Author: renetapopova

antora.yml

@@ -8,5 +8,5 @@ asciidoc:
   attributes:
     page-origin-private: false
     neo4j-version: '4.4'
-    neo4j-version-exact: '4.4.37'
+    neo4j-version-exact: '4.4.38'
     neo4j-buildnumber: '4.4'