Bump build-helper-maven-plugin from 1.7 to 3.2.0

Bumps [build-helper-maven-plugin](https://github.com/mojohaus/build-helper-maven-plugin) from 1.7 to 3.2.0.
- [Release notes](https://github.com/mojohaus/build-helper-maven-plugin/releases)
- [Commits](https://github.com/mojohaus/build-helper-maven-plugin/compare/build-helper-maven-plugin-1.7...build-helper-maven-plugin-3.2.0)

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index ea8e780..cc15c2a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -510,7 +510,7 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>build-helper-maven-plugin</artifactId>
-            <version>1.7</version>
+            <version>3.2.0</version>
             <executions>
               <execution>
                 <id>add-test-source</id>