Rollup merge of #74241 - RalfJung:miri, r=RalfJung

update miri

This incorporates https://github.com/rust-lang/miri/pull/1474. [Last time](https://github.com/rust-lang/rust/pull/74146) that change caused trouble but I fixed xargo since then and [now it should work](https://github.com/rust-lang/rust/pull/74146#issuecomment-657051446).

Cc @rust-lang/miri r? @ghost
diff --git a/src/tools/miri b/src/tools/miri
index eb5ff17..eee22ff 160000
--- a/src/tools/miri
+++ b/src/tools/miri
@@ -1 +1 @@
-Subproject commit eb5ff1791be706d173b4f4c29e9c0529b4235c0e
+Subproject commit eee22ffddab20f51e1866bcbe4c5a69a90bdd260