avro

Bump maven-shade-plugin from 3.2.3 to 3.2.4 in /lang/java

Bumps [maven-shade-plugin](https://github.com/apache/maven-shade-plugin) from 3.2.3 to 3.2.4.
- [Release notes](https://github.com/apache/maven-shade-plugin/releases)
- [Commits](https://github.com/apache/maven-shade-plugin/compare/maven-shade-plugin-3.2.3...maven-shade-plugin-3.2.4)

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