Update dependency org.apache.maven:maven-core to v3.9.9

Author: renovate[bot]

depclean-core/pom.xml

@@ -112,7 +112,7 @@
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-core</artifactId>
-      <version>3.8.5</version>
+      <version>3.9.9</version>
       <scope>compile</scope>
     </dependency>
     <!-- Graph construction and analysis -->

depclean-maven-plugin/pom.xml

@@ -39,7 +39,7 @@
     <dependency>
       <groupId>org.apache.maven</groupId>
       <artifactId>maven-core</artifactId>
-      <version>3.8.5</version>
+      <version>3.9.9</version>
       <scope>provided</scope>
     </dependency>
     <dependency>