[#2420] Keep only major.minor version in README

For Hibernate ORM and Vert.x.
The current automated release system and dependabot don't update the readme.
It would get out of date at every minor release.

I've included a link to the exact version in the catalog, though.

Author: DavideD

README.md

@@ -37,14 +37,18 @@ Hibernate Reactive has been tested with:
 - CockroachDB v24
 - MS SQL Server 2022
 - Oracle 23
-- [Hibernate ORM][] 6.6.15.Final
-- [Vert.x Reactive PostgreSQL Client](https://vertx.io/docs/vertx-pg-client/java/) 4.5.16
-- [Vert.x Reactive MySQL Client](https://vertx.io/docs/vertx-mysql-client/java/) 4.5.16
-- [Vert.x Reactive Db2 Client](https://vertx.io/docs/vertx-db2-client/java/) 4.5.16
-- [Vert.x Reactive MS SQL Server Client](https://vertx.io/docs/vertx-mssql-client/java/) 4.5.16
-- [Vert.x Reactive Oracle Client](https://vertx.io/docs/vertx-oracle-client/java/) 4.5.16
+- [Hibernate ORM][] 6.6
+- [Vert.x Reactive PostgreSQL Client](https://vertx.io/docs/vertx-pg-client/java/) 4.5
+- [Vert.x Reactive MySQL Client](https://vertx.io/docs/vertx-mysql-client/java/) 4.5
+- [Vert.x Reactive Db2 Client](https://vertx.io/docs/vertx-db2-client/java/) 4.5
+- [Vert.x Reactive MS SQL Server Client](https://vertx.io/docs/vertx-mssql-client/java/) 4.5
+- [Vert.x Reactive Oracle Client](https://vertx.io/docs/vertx-oracle-client/java/) 4.5
 - [Quarkus][Quarkus] via the Hibernate Reactive extension
 
+The exact version of the libraries and images are in the
+[catalog](https://github.com/hibernate/hibernate-reactive/blob/2.4/gradle/libs.versions.toml)
+and in the [tooling/docker](https://github.com/hibernate/hibernate-reactive/tree/2.4/tooling/docker) folder.
+
 [PostgreSQL]: https://www.postgresql.org
 [MySQL]: https://www.mysql.com
 [MariaDB]: https://mariadb.com