Update dependency org.apache.maven.plugins:maven-jar-plugin to v3.4.0 (#819)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[org.apache.maven.plugins:maven-jar-plugin](https://maven.apache.org/plugins/)
| `3.3.0` -> `3.4.0` |
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|
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|
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generator/pom.xml

@@ -48,7 +48,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.3.0</version>
+                <version>3.4.0</version>
                 <executions>
                     <execution>
                       <id>default-jar</id>