Try rustup stable

Author: buggmagnet

.github/workflows/ios.yml

@@ -75,7 +75,8 @@ jobs:
           xcode-version: '15.0.1'
       - name: Configure Rust
         run: |
-          rustup update 1.77.0
+          rustup default stable
+          rustup update stable
           rustup target add aarch64-apple-ios-sim
 
       - name: Configure Xcode project