Bump picocli from 4.6.2 to 4.7.1

Bumps [picocli](https://github.com/remkop/picocli) from 4.6.2 to 4.7.1.
- [Release notes](https://github.com/remkop/picocli/releases)
- [Changelog](https://github.com/remkop/picocli/blob/main/RELEASE-NOTES.md)
- [Commits](https://github.com/remkop/picocli/compare/v4.6.2...v4.7.1)

---
updated-dependencies:
- dependency-name: info.picocli:picocli
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Closes #73

Change-Id: I57a3d77211bb13315abc96164041beb7eb2456a7
diff --git a/pom.xml b/pom.xml
index 5a78d6c..a2780e9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -251,7 +251,7 @@
         <dependency>
             <groupId>info.picocli</groupId>
             <artifactId>picocli</artifactId>
-            <version>4.6.2</version>
+            <version>4.7.1</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/org.apache.opennlp/opennlp-tools -->