Bump maven-core-version from 3.8.6 to 3.9.12

Bumps `maven-core-version` from 3.8.6 to 3.9.12.

Updates `org.apache.maven:maven-plugin-api` from 3.8.6 to 3.9.12
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.8.6...maven-3.9.12)

Updates `org.apache.maven:maven-core` from 3.8.6 to 3.9.12

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-version: 3.9.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.maven:maven-core
  dependency-version: 3.9.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -129,7 +129,7 @@
     <depends-maven-plugin-version>1.5.0</depends-maven-plugin-version>
     <maven-project-info-reports-plugin-version>3.9.0</maven-project-info-reports-plugin-version>
     <maven-graph-plugin-version>1.45</maven-graph-plugin-version>
-    <maven-core-version>3.8.6</maven-core-version>
+    <maven-core-version>3.9.12</maven-core-version>
     <maven-surefire-plugin-version>3.5.3</maven-surefire-plugin-version>
     <!-- OSGi bundles properties -->
     <activemq.osgi.import.pkg>*</activemq.osgi.import.pkg>