Bump args4j:args4j from 2.0.12 to 2.0.31

Bumps [args4j:args4j](https://github.com/kohsuke/args4j) from 2.0.12 to 2.0.31.
- [Changelog](https://github.com/kohsuke/args4j/blob/master/xdocs/changes.xml)
- [Commits](kohsuke/args4j@args4j-2.0.12...args4j-site-2.0.31)

---
updated-dependencies:
- dependency-name: args4j:args4j
  dependency-version: 2.0.31
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -1146,7 +1146,7 @@
       <dependency>
         <groupId>args4j</groupId>
         <artifactId>args4j</artifactId>
-        <version>2.0.12</version>
+        <version>2.0.31</version>
       </dependency>
       <dependency>
         <groupId>org.apache.xbean</groupId>