Update project.migrated.version to 252

Author: arimer

code/languages/org.iets3.opensource/.mps/migration.xml

@@ -25,6 +25,6 @@
     <entry key="jetbrains.mps.ide.mpsmigration.v_2024_3.LangResourceImport4Migration" value="executed" />
     <entry key="jetbrains.mps.javaVersionMigration_JDKDefault" value="executed" />
     <entry key="jetbrains.mps.v8_elimination" value="executed" />
-    <entry key="project.migrated.version" value="251" />
+    <entry key="project.migrated.version" value="252" />
   </component>
 </project>