update documentation

Author: mevdschee

README.md

@@ -1399,6 +1399,7 @@ I am testing mainly on Ubuntu and I have the following test setups:
   - (Docker) Ubuntu 20.04 with PHP 7.4, MySQL 8.0, PostgreSQL 12.2 (PostGIS 3.0) and SQLServer 2019 and SQLite 3.31 
   - (Docker) CentOS 8 with PHP 8.1, MariaDB 10.7, PostgreSQL 12.10 (PostGIS 3.0) and SQLite 3.26
   - (Docker) Debian 11 with PHP 7.4, MariaDB 10.5, PostgreSQL 13.4 (PostGIS 3.1) and SQLite 3.34
+  - (Docker) Ubuntu 22.04 with PHP 8.1, MySQL 8.0, PostgreSQL 14.2 (PostGIS 3.2) and SQLite 3.37 
 
 This covers not all environments (yet), so please notify me of failing tests and report your environment. 
 I will try to cover most relevant setups in the "docker" folder of the project.