Bump Neo4j version to 4.4.42, java driver v. to 4.4.20

Author: NataliaIvakina

antora.yml

@@ -9,6 +9,6 @@ asciidoc:
     page-origin-private: false
     neo4j-javadocs-base-uri: "https://neo4j.com/docs/java-reference/4.4/javadocs"
     neo4j-version: '4.4'
-    neo4j-version-exact: '4.4.41'
+    neo4j-version-exact: '4.4.42'
     neo4j-buildnumber: '4.4'
-    java-driver-version: '4.4.19'
+    java-driver-version: '4.4.20'