Bump org.apache.opennlp:opennlp-tools from 2.5.6.1 to 2.5.7

Bumps [org.apache.opennlp:opennlp-tools](https://github.com/apache/opennlp) from 2.5.6.1 to 2.5.7.
- [Release notes](https://github.com/apache/opennlp/releases)
- [Commits](https://github.com/apache/opennlp/compare/opennlp-2.5.6.1...opennlp-2.5.7)

---
updated-dependencies:
- dependency-name: org.apache.opennlp:opennlp-tools
  dependency-version: 2.5.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Closes #20

Change-Id: Ief7f5a5feba511eee8e0a1b13ab247ff5a47e944
diff --git a/app/build.gradle b/app/build.gradle
index 93819ce..5eef7aa 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -45,7 +45,7 @@
 
     implementation 'com.github.kupietz:cistern:v1.0.4'
     implementation 'org.maltparser:maltparser:1.9.2'
-    implementation 'org.apache.opennlp:opennlp-tools:2.5.6.1'
+    implementation 'org.apache.opennlp:opennlp-tools:2.5.7'
     implementation 'edu.stanford.nlp:stanford-corenlp:3.9.2'
     implementation 'org.slf4j:slf4j-simple:2.0.17'
     implementation 'org.apache.ant:ant:1.10.15'