Rollup merge of #64283 - XAMPPRocky:master, r=Mark-Simulacrum
Rollup merge of #64283 - XAMPPRocky:master, r=Mark-Simulacrum

Updated RELEASES.md for 1.38.0

### [Rendered](https://github.com/XAMPPRocky/rust/blob/master/RELEASES.md)

r? @Mark-Simulacrum
cc @rust-lang/release

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