default.xml: thumbnails module is back to master
diff --git a/default.xml b/default.xml
index 8d49236..7e57605 100644
--- a/default.xml
+++ b/default.xml
@@ -314,7 +314,7 @@
   <project path='org-apache-sling-testing-serversetup' name='sling-org-apache-sling-testing-serversetup.git' description='Apache Sling Server Setup Tools' groups='testing' />
   <project path='org-apache-sling-testing-sling-mock' name='sling-org-apache-sling-testing-sling-mock.git' description='Apache Sling Testing Sling Mock' groups='testing' />
   <project path='org-apache-sling-testing-sling-mock-oak' name='sling-org-apache-sling-testing-sling-mock-oak.git' description='Apache Sling Testing Sling Mock Jackrabbit Oak-based Resource Resolver' groups='testing' />
-  <project path='org-apache-sling-thumbnails' name='sling-org-apache-sling-thumbnails.git' description='Apache Sling Thumbnails' revision='main'/>
+  <project path='org-apache-sling-thumbnails' name='sling-org-apache-sling-thumbnails.git' description='Apache Sling Thumbnails' />
   <project path='org-apache-sling-tooling-support-install' name='sling-org-apache-sling-tooling-support-install.git' description='Apache Sling Tooling Support Install' groups='tooling' />
   <project path='org-apache-sling-tooling-support-source' name='sling-org-apache-sling-tooling-support-source.git' description='Apache Sling Tooling Support Source' groups='tooling' />
   <project path='org-apache-sling-tracer' name='sling-org-apache-sling-tracer.git' description='Apache Sling Log Tracer' />
@@ -339,4 +339,4 @@
   <project path='tooling-release' name='sling-tooling-release.git' description='Apache Sling Release Tooling' />
   <project path='tooling-scm' name='sling-tooling-scm.git' description='Apache Sling SCM Tooling' />
   <project path='whiteboard' name='sling-whiteboard.git' description='Apache Sling Whiteboard - testing ground for new ideas' />
-</manifest>
+</manifest>
\ No newline at end of file