Auto merge of #131859 - chriskrycho:update-trpl, r=onur-ozkan

Update TRPL to add new Chapter 17: Async and Await

- Add support to `rustbook` to pass through the `-L`/`--library-path` flag to `mdbook` so that references to the `trpl` crate
- Build the `trpl` crate as part of the book tests. Make it straightforward to add other such book dependencies in the future if needed by implementing that in a fairly general way.
- Update the submodule for the book to pull in the new chapter on async and await, as well as a number of other fixes. This will happen organically/automatically in a week, too, but this lets me group this change with the next one:
- Update the compiler messages which reference the existing chapters 17–20, which are now chapters 18-21. There are only two, both previously referencing chapter 18.
- Update the UI tests which reference the compiler message outputs.

compiler/rustc_resolve/src/late/diagnostics.rs

@@ -1206,7 +1206,7 @@ impl<'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> {
         let PathSource::TupleStruct(_, _) = source else { return };
         let Some(Res::Def(DefKind::Fn, _)) = res else { return };
         err.primary_message("expected a pattern, found a function call");
-        err.note("function calls are not allowed in patterns: <https://doc.rust-lang.org/book/ch18-00-patterns.html>");
+        err.note("function calls are not allowed in patterns: <https://doc.rust-lang.org/book/ch19-00-patterns.html>");
     }
 
     fn suggest_changing_type_to_const_param(