Update build-helper-maven-plugin to 3.2.0

spec/pom.xml

diff --git a/spec/pom.xml b/spec/pom.xml
index 91a0c15..fc97473 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -125,7 +125,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>build-helper-maven-plugin</artifactId>
-                <version>3.1.0</version>
+                <version>3.2.0</version>
                 <executions>
                     <execution>
                         <id>timestamp-property</id>