Update product matrix and copyright date

References: https://github.com/EnterpriseDB/repmgr/issues/879

README.md

@@ -68,6 +68,7 @@ news are always welcome.
 
 Thanks from the repmgr core team.
 
+* Ian Barwick
 * Israel Barth
 * Mario González
 * Martín Marqués
@@ -75,7 +76,6 @@ Thanks from the repmgr core team.
 
 Past contributors:
 
-* Ian Barwick
 * Jaime Casanova
 * Abhijit Menon-Sen
 * Simon Riggs

doc/install-requirements.xml

@@ -125,7 +125,7 @@
               <link linkend="release-5.5.0">&repmgrversion;</link> (&releasedate;)
             </entry>
             <entry>
-              13, 14, 15, 16, 17
+              12, 13, 15, 16, 17
             </entry>
             <entry>
               &nbsp;
@@ -143,7 +143,7 @@
               <link linkend="release-5.4.1">5.4.1</link> (2023-04-04)
             </entry>
             <entry>
-              10, 11, 12, 13, 14, 15
+              10, 11, 12, 13, 15
             </entry>
             <entry>
               &nbsp;