increase version number in org.eclipse.jdt.text.tests

Author: tobias-melcher

org.eclipse.jdt.text.tests/META-INF/MANIFEST.MF

@@ -3,7 +3,7 @@ Automatic-Module-Name: org.eclipse.jdt.text.tests
 Bundle-ManifestVersion: 2
 Bundle-Name: %Plugin.name
 Bundle-SymbolicName: org.eclipse.jdt.text.tests;singleton:=true
-Bundle-Version: 3.15.300.qualifier
+Bundle-Version: 3.15.400.qualifier
 Bundle-Activator: org.eclipse.jdt.text.tests.JdtTextTestPlugin
 Bundle-ActivationPolicy: lazy
 Bundle-Vendor: %Plugin.providerName