Add version 1.15.18 to the release history of the README and update t…

…he version to 1.15.18 in the examples in the README

README.org

@@ -217,7 +217,7 @@ Do the following steps:
        #+BEGIN_SRC nxml
          <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
          <features xmlns="http://karaf.apache.org/xmlns/features/v1.5.0" name="authservice.bundle">
-             <repository>mvn:no.priv.bang.authservice/karaf/1.15.17/xml/features</repository>
+             <repository>mvn:no.priv.bang.authservice/karaf/1.15.18/xml/features</repository>
              <feature name="${karaf-feature-name}">
                  <feature>user-admin-with-productiondb</feature>
              </feature>
@@ -432,6 +432,7 @@ Authservice uses XML syntax liquibase to set up the schema, straightforward SQL
 
 | Date             | Version | Comment                                                                                                                                                                          |
 |------------------+---------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [2024-03-01 Fri] | 1.15.18 | Use postgresql jdbc 42.7.2                                                                                                                                                       |
 | [2024-03-01 Fri] | 1.15.17 | Use version of JerseyServlet that supports shiro-jaxrs                                                                                                                           |
 | [2024-02-12 Mon] | 1.15.16 | Shiro version set by maven parent, no longer export shiro deps in the BOM                                                                                                        |
 | [2023-12-13 Wed] | 1.15.15 | Use shiro 1.13.0, postgresql JDBC 42.7.1, jsoup 1.17.1 and mockito 5.8.0                                                                                                         |