Upgrade to Modulith 1.2.7

See gh-1690

Author: snicoll

start-site/src/main/resources/application.yml

@@ -133,7 +133,7 @@ initializr:
         versionProperty: spring-modulith.version
         mappings:
           - compatibilityRange: "[3.3.0,3.4.0-M1)"
-            version: 1.2.4
+            version: 1.2.7
           - compatibilityRange: "[3.4.0,3.5.0-M1)"
             version: 1.3.1
       spring-shell: