Bug 568008: Update to JUnit Jupiter 5.6

Change-Id: I4466d283f4972eda105882fbbc48fc0ced8b5dde
diff --git a/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF b/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
index 4b81a2a..3d1578d 100644
--- a/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
+++ b/docmlet/org.eclipse.statet.docmlet.base.core-tests/META-INF/MANIFEST.MF
@@ -7,4 +7,4 @@
 Bundle-Name: StatET DocMLET - Base - Core - Tests  (Incubation)
 Fragment-Host: org.eclipse.statet.docmlet.base.core
 Bundle-RequiredExecutionEnvironment: JavaSE-11
-Import-Package: org.junit.jupiter.api;bundle-version="5.5.1"
+Import-Package: org.junit.jupiter.api;bundle-version="5.6.0"