Auto merge of #55064 - RalfJung:miri-update, r=oli-obk
Auto merge of #55064 - RalfJung:miri-update, r=oli-obk

update miri

This pulls in the changes in miri to actually enable validation. So, the rustc test suite will let us know if anything we cover regresses in that regard. :)

r? @oli-obk

aidancully/rust,aidancully/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,aidancully/rust,graydon/rust,GBGamer/rust,aidancully/rust,aidancully/rust,graydon/rust,GBGamer/rust