fix(deps): bump tycho-build from 3.0.3 to 3.0.4

Bumps [tycho-build](https://github.com/eclipse/tycho) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/eclipse/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-3.0.4/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-3.0.3...tycho-3.0.4)

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

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

.mvn/extensions.xml

@@ -3,6 +3,6 @@
     <extension>
         <groupId>org.eclipse.tycho</groupId>
         <artifactId>tycho-build</artifactId>
-        <version>3.0.3</version>
+        <version>3.0.4</version>
     </extension>
 </extensions>