Bump version.tycho from 4.0.7 to 4.0.8 in /tools/rack

Bumps `version.tycho` from 4.0.7 to 4.0.8.

Updates `org.eclipse.tycho:target-platform-configuration` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-bnd-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-compiler-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-maven-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-p2-director-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-p2-repository-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-packaging-plugin` from 4.0.7 to 4.0.8
- [Release notes](https://github.com/eclipse-tycho/tycho/releases)
- [Changelog](https://github.com/eclipse-tycho/tycho/blob/tycho-4.0.8/RELEASE_NOTES.md)
- [Commits](eclipse-tycho/tycho@tycho-4.0.7...tycho-4.0.8)

Updates `org.eclipse.tycho:tycho-surefire-plugin` from 4.0.7 to 4.0.8

---
updated-dependencies:
- dependency-name: org.eclipse.tycho:target-platform-configuration
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-bnd-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-compiler-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-p2-director-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-p2-repository-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-packaging-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.tycho:tycho-surefire-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

tools/rack/pom.xml

@@ -64,7 +64,7 @@
     <version.javafx>22.0.1</version.javafx>
     <version.rack>${project.version}</version.rack>
     <version.surefire>3.2.5</version.surefire>
-    <version.tycho>4.0.7</version.tycho>
+    <version.tycho>4.0.8</version.tycho>
   </properties>
 
   <!-- Set all dependency versions in one place -->