Upgrade rrts submodule

diff --git a/rrts b/rrts
index 8ea481ad5931ed9e87fee78aec600ce2b1b26a99..65100948617456fc2c2217222206e0f50ce27e6c 160000 (submodule)
--- a/rrts
+++ b/rrts
@@ -1 +1 @@
-Subproject commit 8ea481ad5931ed9e87fee78aec600ce2b1b26a99
+Subproject commit 65100948617456fc2c2217222206e0f50ce27e6c