Bump the all-dependencies group in /example-project with 3 updates

Bumps the all-dependencies group in /example-project with 3 updates: [junit:junit](https://github.com/junit-team/junit4), [org.codehaus.mojo:build-helper-maven-plugin](https://github.com/mojohaus/build-helper-maven-plugin) and [org.apache.maven.plugins:maven-clean-plugin](https://github.com/apache/maven-clean-plugin).


Updates `junit:junit` from 4.13.1 to 4.13.2
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.1.md)
- [Commits](junit-team/junit4@r4.13.1...r4.13.2)

Updates `org.codehaus.mojo:build-helper-maven-plugin` from 1.8 to 3.6.0
- [Release notes](https://github.com/mojohaus/build-helper-maven-plugin/releases)
- [Commits](mojohaus/build-helper-maven-plugin@build-helper-maven-plugin-1.8...3.6.0)

Updates `org.apache.maven.plugins:maven-clean-plugin` from 2.5 to 3.4.0
- [Release notes](https://github.com/apache/maven-clean-plugin/releases)
- [Commits](apache/maven-clean-plugin@maven-clean-plugin-2.5...maven-clean-plugin-3.4.0)

---
updated-dependencies:
- dependency-name: junit:junit
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: org.codehaus.mojo:build-helper-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-dependencies
- dependency-name: org.apache.maven.plugins:maven-clean-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-dependencies
...

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

example-project/pom.xml

@@ -24,7 +24,7 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.13.1</version>
+			<version>4.13.2</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.xtend</groupId>
@@ -38,7 +38,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>build-helper-maven-plugin</artifactId>
-				<version>1.8</version>
+				<version>3.6.0</version>
 				<executions>
 					<execution>
 						<id>add-sources</id>
@@ -68,7 +68,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-clean-plugin</artifactId>
-				<version>2.5</version>
+				<version>3.4.0</version>
 				<executions>
 					<execution>
 						<phase>clean</phase>