Deprecate several flags in rustdoc
Deprecate several flags in rustdoc

Part of #44136

Upgrades cargo due to https://github.com/rust-lang/cargo/pull/4451

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