Bump maven.version from 3.8.5 to 3.8.6

Bumps `maven.version` from 3.8.5 to 3.8.6.

Updates `maven-plugin-api` from 3.8.5 to 3.8.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](https://github.com/apache/maven/compare/maven-3.8.5...maven-3.8.6)

Updates `maven-core` from 3.8.5 to 3.8.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](https://github.com/apache/maven/compare/maven-3.8.5...maven-3.8.6)

Updates `maven-artifact` from 3.8.5 to 3.8.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](https://github.com/apache/maven/compare/maven-3.8.5...maven-3.8.6)

Updates `maven-model` from 3.8.5 to 3.8.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](https://github.com/apache/maven/compare/maven-3.8.5...maven-3.8.6)

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-model
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/buildutils/pom.xml b/buildutils/pom.xml
index efe4385..c31f369 100644
--- a/buildutils/pom.xml
+++ b/buildutils/pom.xml
@@ -39,7 +39,7 @@
     </modules>
 
     <properties>
-        <maven.version>3.8.5</maven.version>
+        <maven.version>3.8.6</maven.version>
         <maven-plugin-tools.version>3.6.4</maven-plugin-tools.version>
     </properties>