fix(deps): update mavenversion to v3.9.12

Author: renovate[bot]

rockcraft-maven/pom.xml

@@ -35,7 +35,7 @@
     <properties>
         <maven-invoker-plugin.version>3.9.1</maven-invoker-plugin.version>
         <maven-plugin-tools.version>3.15.2</maven-plugin-tools.version>
-        <mavenVersion>3.9.11</mavenVersion>
+        <mavenVersion>3.9.12</mavenVersion>
         <mavenPluginVersion>3.15.2</mavenPluginVersion>
         <guiceVersion>6.0.0</guiceVersion>
         <mockitoVersion>5.21.0</mockitoVersion>