Temporarily pin renode release for Sel4Extension breakage

Change-Id: I5f5c9809669a6d387b07e4f11a180dd90adab0ce
diff --git a/manifest.xml b/manifest.xml
index b398627..f86a836 100644
--- a/manifest.xml
+++ b/manifest.xml
@@ -63,7 +63,8 @@
   <!-- END ML toolchain -->
 
   <!-- Simulation -->
-  <project name="3p/renode/renode"                path="sim/renode" />
+  <!-- TODO: unpin renode release -->
+  <project name="3p/renode/renode"                path="sim/renode" revision="cc68145efbf945d2cf3838e1f4307223d7d1857c" />
   <project name="sim/config"                      path="sim/config" />
   <project name="3p/verilator/verilator"          path="sim/verilator" />
   <project name="sim/tests"                       path="sim/tests" />