Merge pull request #9 from vavr-io/dependabot/maven/junit-junit-4.13.1

Bump junit from 4.13-beta-3 to 4.13.1

pom.xml

@@ -43,7 +43,7 @@ We use these goals frequently to keep the dependencies and plugins up-to-date:
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <assertj.core.version>3.11.1</assertj.core.version>
         <java.version>1.8</java.version>
-        <junit.version>4.13-beta-3</junit.version>
+        <junit.version>4.13.1</junit.version>
         <jmh.version>1.21</jmh.version>
         <maven.compiler.version>3.8.1</maven.compiler.version>
         <maven.versions.version>2.7</maven.versions.version>