bump Miri

diff --git a/src/tools/miri b/src/tools/miri
index 2670839e1af540a496a0d889fce9ad42529ecc11..ae964207bb17911cf96d9744d9469fa2734093a8 160000 (submodule)
--- a/src/tools/miri
+++ b/src/tools/miri
@@ -1 +1 @@
-Subproject commit 2670839e1af540a496a0d889fce9ad42529ecc11
+Subproject commit ae964207bb17911cf96d9744d9469fa2734093a8