doc: repmgr 5.2 is no longer supported.

doc/install-requirements.xml

@@ -112,10 +112,9 @@
         </thead>
 
         <tbody>
-
           <row>
             <entry>
-              &repmgr; 5.2
+              &repmgr; 5.3
             </entry>
             <entry>
               YES
@@ -123,6 +122,21 @@
             <entry>
               <link linkend="release-current">&repmgrversion;</link> (&releasedate;)
             </entry>
+            <entry>
+              9.4, 9.5, 9.6, 10, 11, 12, 13, 14
+            </entry>
+          </row>
+
+          <row>
+            <entry>
+              &repmgr; 5.2
+            </entry>
+            <entry>
+              NO
+            </entry>
+            <entry>
+              <link linkend="release-5.2.0">5.2.0</link> (2020-10-22)
+            </entry>
             <entry>
               9.4, 9.5, 9.6, 10, 11, 12, 13
             </entry>

repmgr_version.h.in

@@ -1,5 +1,5 @@
 #define REPMGR_VERSION_DATE ""
-#define REPMGR_VERSION "5.3"
+#define REPMGR_VERSION "5.3.0"
 #define REPMGR_VERSION_NUM 50300
 #define REPMGR_EXTENSION_VERSION "5.3"
 #define REPMGR_EXTENSION_NUM 50300