chore: update Maven to v3.9.13, relax enforcer to [3.9.0,4)

Author: joaodinissf

.github/workflows/verify.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Set up Maven
         uses: stCarolas/setup-maven@v5
         with:
-          maven-version: 3.9.12
+          maven-version: 3.9.13
       - uses: actions/checkout@v6
       - name: Set up JDK 21
         uses: actions/setup-java@v5

ddk-parent/pom.xml

@@ -43,7 +43,7 @@
     <test.testClass>com.avaloq.tools.ddk.xtext.AllTests</test.testClass>
 
     <!-- maven enforced version -->
-    <maven-enforcer-rule.version>3.9.12</maven-enforcer-rule.version>
+    <maven-enforcer-rule.version>[3.9.0,4)</maven-enforcer-rule.version>
 
     <!-- maven plugin versions -->
     <checkstyle.plugin.version>3.6.0</checkstyle.plugin.version>