Add 1.72.1 announcement (#1142)

Author: Mark-Simulacrum

posts/2023-09-19-Rust-1.72.1.md

@@ -0,0 +1,38 @@
+---
+layout: post
+title: "Announcing Rust 1.72.1"
+author: The Rust Release Team
+release: true
+---
+
+The Rust team has published a new point release of Rust, 1.72.1. Rust is a
+programming language that is empowering everyone to build reliable and
+efficient software.
+
+If you have a previous version of Rust installed via rustup, getting Rust
+1.72.1 is as easy as:
+
+```
+rustup update stable
+```
+
+If you don't have it already, you can [get `rustup`][rustup] from the
+appropriate page on our website.
+
+[rustup]: https://www.rust-lang.org/install.html
+
+## What's in 1.72.1
+
+1.72.1 resolves a few regressions introduced in 1.72.0:
+
+- [Partially revert codegen change, improving codegen](https://github.com/rust-lang/rust/pull/115236)
+- [rustdoc: Fix self ty params in objects with lifetimes](https://github.com/rust-lang/rust/pull/115276)
+- [Fix regression in compile times](https://github.com/rust-lang/rust/pull/114948)
+- Resolve some ICEs in the compiler:
+  - [#115215](https://github.com/rust-lang/rust/pull/115215)
+  - [#115559](https://github.com/rust-lang/rust/pull/115559)
+
+### Contributors to 1.72.1
+
+Many people came together to create Rust 1.72.1. We couldn't have done it
+without all of you. [Thanks!](https://thanks.rust-lang.org/rust/1.72.1/)