Bump junit from 4.12 to 4.13 in /PgBulkInsert

Bumps [junit](https://github.com/junit-team/junit4) from 4.12 to 4.13.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/master/doc/ReleaseNotes4.12.md)
- [Commits](junit-team/junit4@r4.12...r4.13)

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

Author: dependabot-preview[bot]

PgBulkInsert/pom.xml

@@ -119,7 +119,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
         <postgresql.version>42.2.9</postgresql.version>
-        <junit.version>4.12</junit.version>
+        <junit.version>4.13</junit.version>
     </properties>