Bump junit from 4.12 to 4.13.1

Bumps [junit](https://github.com/junit-team/junit4) from 4.12 to 4.13.1.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.12.md)
- [Commits](junit-team/junit4@r4.12...r4.13.1)

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

Author: dependabot[bot]

mysql-replicator/pom.xml

@@ -213,7 +213,7 @@
                     <dependency>
                         <groupId>junit</groupId>
                         <artifactId>junit</artifactId>
-                        <version>4.12</version>
+                        <version>4.13.1</version>
                     </dependency>
                 </dependencies>
             </plugin>

pom.xml

@@ -22,7 +22,7 @@
         <mockito.version>2.18.3</mockito.version>
         <sparkWebServer.version>2.7.2</sparkWebServer.version>
 
-        <junit.version>4.12</junit.version>
+        <junit.version>4.13.1</junit.version>
         <testcontainers.version>1.8.0</testcontainers.version>
         <log4j1.version>1.2.17</log4j1.version>
         <log4j2.version>2.11.0</log4j2.version>