Bump org.apache.maven.plugins:maven-assembly-plugin in /java (#250)

Bumps [org.apache.maven.plugins:maven-assembly-plugin](https://github.com/apache/maven-assembly-plugin) from 3.7.1 to 3.8.0.
- [Release notes](https://github.com/apache/maven-assembly-plugin/releases)
- [Commits](apache/maven-assembly-plugin@maven-assembly-plugin-3.7.1...v3.8.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-assembly-plugin
  dependency-version: 3.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

java/pom.xml

@@ -338,7 +338,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-assembly-plugin</artifactId>
-          <version>3.7.1</version>
+          <version>3.8.0</version>
         </plugin>
 
         <plugin>