Auto merge of #90004 - pietroalbini:stable-next, r=pietroalbini 1.56.0

Rust 1.56.0 stable release

This PR bumps 1.56.0 to the stable channel. This also includes a backport for:

* Latest changes to the release notes
* #89867

r? `@ghost`
cc `@rust-lang/release`

1 files changed, 14 insertions, 0 deletions

diff --git a/src/test/rustdoc/issue-89852.rs b/src/test/rustdoc/issue-89852.rs
new file mode 100644
index 00000000000..45544dbeea6
--- /dev/null
+++ b/src/test/rustdoc/issue-89852.rs
@@ -0,0 +1,14 @@
+// edition:2018
+
+#![no_core]
+#![feature(no_core)]
+
+// @matches 'issue_89852/sidebar-items.js' '"repro"'
+// @!matches 'issue_89852/sidebar-items.js' '"repro".*"repro"'
+
+#[macro_export]
+macro_rules! repro {
+    () => {};
+}
+
+pub use crate::repro as repro2;