Bump plexus-utils from 1.5.15 to 3.0.16

Bumps [plexus-utils](https://github.com/sonatype/plexus-utils) from 1.5.15 to 3.0.16.
- [Release notes](https://github.com/sonatype/plexus-utils/releases)
- [Commits](https://github.com/sonatype/plexus-utils/compare/plexus-utils-1.5.15...plexus-utils-3.0.16)

---
updated-dependencies:
- dependency-name: org.codehaus.plexus:plexus-utils
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index c2f6fac..bfa53d8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -36,7 +36,7 @@
   <!-- this is what get edited most, so lets put it on the top -->
   <properties>
     <mavenVersion>2.2.1</mavenVersion>
-    <plexus.utils.version>1.5.15</plexus.utils.version>
+    <plexus.utils.version>3.0.16</plexus.utils.version>
     <gmaven.version>1.2</gmaven.version>
     <!-- if you want to build NPanday with a specific version, replace this -->
     <!--