Add support for postgres 15 and 16 (#712)

README.adoc

@@ -561,7 +561,7 @@ By default, the Jenkins Pipeline Maven Plugin uses an H2 embedded database, but
 Configuration steps to use a PostgreSQL:
 
 * Create an empty PostgreSQL database with a dedicated PostgreSQL user with permissions for Data Manipulation Language actions (DML) and Data Definition Language (DDL) actions
-** Tested with PostgreSQL 10.6 and 11.3
+** Tested with PostgreSQL up to 16
 * Install the Jenkins the https://plugins.jenkins.io/postgresql-api/[PostgreSQL API] plugin
 ** Navigate to `Manage Jenkins / Manage Plugins / Available`, select the `PostgreSQL API` plugin and click on `Download now and install after restart`.
 *  Configure the Pipeline Maven Plugin to use the created PostgreSQL database

pipeline-maven-database/src/main/java/org/jenkinsci/plugins/pipeline/maven/db/AbstractPipelineMavenPluginDao.java

@@ -344,6 +344,8 @@ public FormValidation validateConfiguration(Config config) {
                                 }
                             }
                             switch (metaData.getDatabaseMajorVersion()) {
+                                case 16:
+                                case 15:
                                 case 14:
                                 case 13:
                                 case 12:

pipeline-maven/src/main/resources/org/jenkinsci/plugins/pipeline/maven/GlobalPipelineMavenConfig/help-jdbcUrl.html

@@ -1,6 +1,6 @@
 <div>
     <p>
-        Supported databases are H2, MySQL(including MySQL 5.7+, MariaDB 5.5+, Amazon Aurora DB for MySQL 5.6+...) and PostgreSQL 10+.
+        Supported databases are H2, MySQL(including MySQL 5.7+, MariaDB 5.5+, Amazon Aurora DB for MySQL 5.6+...) and PostgreSQL up to 16.
         For production workloads, use MySQL / MariaDB or PostgreSQL.
     </p>
     <p>