Prepare Release 4.31 (#1577)

Co-authored-by: eclipse-releng-bot <eclipse-releng-bot@users.noreply.github.com>

eclipse-platform-parent/pom.xml

@@ -19,7 +19,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.eclipse</groupId>
   <artifactId>eclipse-platform-parent</artifactId>
-  <version>4.30.0-SNAPSHOT</version>
+  <version>4.31.0-SNAPSHOT</version>
   <packaging>pom</packaging>
   <!--
     See maven-enforcer-plugin configuration to actually break the build if
@@ -49,7 +49,7 @@
       such as Version: Mars (4.5), for main features.
       See bug 328139.
     -->
-    <releaseName>2023-12</releaseName>
+    <releaseName>2024-03</releaseName>
     <!--
       The releaseNumbers below, for SDK and Platform, might be
       thought of as the "marketing number" or "branding number",
@@ -64,8 +64,8 @@
       but we'd still want the "marketing number" to be increased to reflect
       "a new yearly release".
     -->
-    <releaseNumberSDK>4.30</releaseNumberSDK>
-    <releaseNumberPlatform>4.30</releaseNumberPlatform>
+    <releaseNumberSDK>4.31</releaseNumberSDK>
+    <releaseNumberPlatform>4.31</releaseNumberPlatform>
 
     <tycho.version>4.0.4</tycho.version>
 
@@ -252,7 +252,7 @@
             <artifact>
               <groupId>org.eclipse</groupId>
               <artifactId>eclipse-sdk-prereqs</artifactId>
-              <version>4.30.0-SNAPSHOT</version>
+              <version>4.31.0-SNAPSHOT</version>
             </artifact>
           </target>
           <environments>

eclipse.platform.releng.prereqs.sdk/pom.xml

@@ -12,7 +12,7 @@
   <parent>
     <groupId>org.eclipse</groupId>
     <artifactId>eclipse-platform-parent</artifactId>
-    <version>4.30.0-SNAPSHOT</version>
+    <version>4.31.0-SNAPSHOT</version>
     <relativePath>../eclipse-platform-parent</relativePath>
   </parent>