Document 5.1 as a supported neo4j version

Author: FlorentinD

doc/modules/ROOT/pages/installation/supported-neo4j-versions.adoc

@@ -13,10 +13,12 @@ Time to upgrade!
 [opts=header]
 |===
 | Neo4j Graph Data Science | Neo4j version
-.2+<.^|`2.3`
+.3+<.^|`2.3`
 | `4.4`, at least `4.4.9`
 | `4.3`, at least `4.3.15`
-.2+<.^|`2.2`
+| `5.1`
+.3+<.^|`2.2`
 | `4.4`, at least `4.4.9`
 | `4.3`, at least `4.3.15`
+| `5.1`
 |===