Merge pull request #81 from LearnLib/dependabot/maven/backend/junit-junit-4.13.1

Bump junit from 4.13 to 4.13.1 in /backend

Author: abainczyk

backend/pom.xml

@@ -61,7 +61,7 @@
         <json-path.version>2.4.0</json-path.version>
         <hsqldb.version>2.5.0</hsqldb.version>
         <jackson-datatype.version>2.10.3</jackson-datatype.version>
-        <junit.version>4.13</junit.version>
+        <junit.version>4.13.1</junit.version>
         <mockito.version>2.23.0</mockito.version>
         <json-schema-validator.version>2.2.10</json-schema-validator.version>
         <mysql-connector.version>8.0.19</mysql-connector.version>