Upgrade supported PostgreSQL to version 16

Closes keycloak#29875

Signed-off-by: Miquel Simon <[email protected]>

docs/documentation/release_notes/topics/25_0_0.adoc

@@ -212,4 +212,8 @@ For more details, see the link:{upgradingguide_link}[{upgradingguide_name}].
 As a consequence of the removal of deprecated methods from `AccessToken`, `IDToken`, and `JsonWebToken`,
 the `SingleUseObjectKeyModel` also changed to keep consistency with the method names related to expiration values.
 
-For more details, see the link:{upgradingguide_link}[{upgradingguide_name}].
+For more details, see the link:{upgradingguide_link}[{upgradingguide_name}].
+
+= Support for PostgreSQL 16
+
+The supported and tested databases now include PostgreSQL 16.

pom.xml

@@ -157,8 +157,8 @@
         <!-- Databases - also published to db.adoc as "Tested Version" -->
         <mysql.version>8.0</mysql.version>
         <mysql-jdbc.version>8.3.0</mysql-jdbc.version>
-        <postgresql.version>15</postgresql.version>
-        <aurora-postgresql.version>15.5</aurora-postgresql.version>
+        <postgresql.version>16</postgresql.version>
+        <aurora-postgresql.version>16.1</aurora-postgresql.version>
         <aws-jdbc-wrapper.version>2.3.1</aws-jdbc-wrapper.version>
         <postgresql-jdbc.version>42.7.2</postgresql-jdbc.version>
         <mariadb.version>10.11</mariadb.version>