Bump opennlp-tools from 2.1.1 to 2.2.0

Bumps [opennlp-tools](https://github.com/apache/opennlp) from 2.1.1 to 2.2.0.
- [Release notes](https://github.com/apache/opennlp/releases)
- [Commits](https://github.com/apache/opennlp/compare/opennlp-2.1.1...opennlp-2.2.0)

---
updated-dependencies:
- dependency-name: org.apache.opennlp:opennlp-tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Closes #89

Change-Id: Ibabf08a348c3bff1b1d9c8d3912815eb791d55fb
diff --git a/pom.xml b/pom.xml
index a752051..4898585 100644
--- a/pom.xml
+++ b/pom.xml
@@ -258,7 +258,7 @@
         <dependency>
             <groupId>org.apache.opennlp</groupId>
             <artifactId>opennlp-tools</artifactId>
-            <version>2.1.1</version>
+            <version>2.2.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>