Bump org.codehaus.mojo:build-helper-maven-plugin from 3.3.0 to 3.4.0

Bumps [org.codehaus.mojo:build-helper-maven-plugin](https://github.com/mojohaus/build-helper-maven-plugin) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/mojohaus/build-helper-maven-plugin/releases)
- [Commits](mojohaus/build-helper-maven-plugin@build-helper-maven-plugin-3.3.0...3.4.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:build-helper-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

docs/pom.xml

@@ -20,7 +20,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>build-helper-maven-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                         <phase>generate-sources</phase>

tools/gradle-plugin/pom.xml

@@ -93,7 +93,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>build-helper-maven-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                         <id>attach-artifacts</id>