Bump helidon-maven-plugin from 3.0.3 to 3.0.4

Bumps helidon-maven-plugin from 3.0.3 to 3.0.4.

---
updated-dependencies:
- dependency-name: io.helidon.build-tools:helidon-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

wls-exporter-sidecar/pom.xml

@@ -17,7 +17,7 @@
         <helidon.version>3.1.1</helidon.version>
         <mainClass>com.oracle.wls.exporter.sidecar.Main</mainClass>
 
-        <version.plugin.helidon>3.0.3</version.plugin.helidon>
+        <version.plugin.helidon>3.0.4</version.plugin.helidon>
     </properties>
 
     <dependencyManagement>