Bump maven-assembly-plugin from 3.3.0 to 3.4.0

Bumps [maven-assembly-plugin](https://github.com/apache/maven-assembly-plugin) from 3.3.0 to 3.4.0.
- [Release notes](https://github.com/apache/maven-assembly-plugin/releases)
- [Commits](apache/maven-assembly-plugin@maven-assembly-plugin-3.3.0...maven-assembly-plugin-3.4.0)

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

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

Author: dependabot[bot]

exist-parent/pom.xml

@@ -808,7 +808,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-assembly-plugin</artifactId>
-                    <version>3.3.0</version>
+                    <version>3.4.0</version>
                     <configuration>
                         <archive>
                             <manifest>