Bump junit from 4.12 to 4.13 in /core

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/main/doc/ReleaseNotes4.12.md)
- [Commits](https://github.com/junit-team/junit4/compare/r4.12...r4.13)

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

Closes #94

Change-Id: I2d38242fa47864c79ac49330ed5bec97f5477b20
diff --git a/core/pom.xml b/core/pom.xml
index 8121ecb..002d1f1 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -226,7 +226,7 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.12</version>
+			<version>4.13</version>
 		</dependency>
 		<dependency>
 			<groupId>org.projectlombok</groupId>