Bump org.eclipse.platform:org.eclipse.osgi from 3.18.300 to 3.18.400 (#3038)

Bumps [org.eclipse.platform:org.eclipse.osgi](https://github.com/eclipse-equinox/equinox) from 3.18.300 to 3.18.400.
- [Commits](https://github.com/eclipse-equinox/equinox/commits)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/dependencies.gradle

@@ -29,7 +29,7 @@ libraries.autoservice = "com.google.auto.service:auto-service:1.1.1"
 libraries.objenesis = 'org.objenesis:objenesis:3.3'
 
 libraries.osgi = 'org.osgi:osgi.core:8.0.0'
-libraries.equinox = 'org.eclipse.platform:org.eclipse.osgi:3.18.300'
+libraries.equinox = 'org.eclipse.platform:org.eclipse.osgi:3.18.400'
 libraries.bndGradle =  'biz.aQute.bnd:biz.aQute.bnd.gradle:6.4.0'
 
 libraries.groovy = 'org.codehaus.groovy:groovy:3.0.17'