Bump junit.jupiter.version from 5.5.2 to 5.6.2

Bumps `junit.jupiter.version` from 5.5.2 to 5.6.2.

Updates `junit-jupiter-api` from 5.5.2 to 5.6.2
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.5.2...r5.6.2)

Updates `junit-jupiter-engine` from 5.5.2 to 5.6.2
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.5.2...r5.6.2)

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

workbenchfx-core/pom.xml

@@ -81,7 +81,7 @@
 
         <!-- JUnit -->
         <junit.version>4.13</junit.version>
-        <junit.jupiter.version>5.5.2</junit.jupiter.version>
+        <junit.jupiter.version>5.6.2</junit.jupiter.version>
         <junit.vintage.version>5.6.2</junit.vintage.version>
     </properties>