Prepare for merging from rust-lang/rust

The rustc-josh-sync Cronjob Bot · The rustc-josh-sync Cronjob Bot · commit 545fe3f8a51f · 2026-06-08T05:40:34.000Z
This updates the rust-version file to 029c9e1.
diff --git a/src/tools/rust-analyzer/rust-version b/src/tools/rust-analyzer/rust-version
@@ -1 +1 @@
-43a4909ee98ed4d006d9d773f5d94dc58e34f846
+029c9e18dd1f4668e1d42bb187c1c263dfe20093
