Bump org.eclipse.platform:org.eclipse.e4.ui.workbench3

Bumps [org.eclipse.platform:org.eclipse.e4.ui.workbench3](https://github.com/eclipse-platform/eclipse.platform.ui) from 0.17.300 to 0.17.400.
- [Commits](https://github.com/eclipse-platform/eclipse.platform.ui/commits)

---
updated-dependencies:
- dependency-name: org.eclipse.platform:org.eclipse.e4.ui.workbench3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

tycho-surefire/org.eclipse.tycho.surefire.osgibooter/pom.xml

@@ -38,7 +38,7 @@
 		<dependency>
 			<groupId>org.eclipse.platform</groupId>
 			<artifactId>org.eclipse.e4.ui.workbench3</artifactId>
-			<version>0.17.300</version>
+			<version>0.17.400</version>
 			<exclusions>
 				<exclusion>
 					<groupId>*</groupId>