fix: add stable toolchain for upload-cw-clients

Author: Farhad-Shabani

.github/workflows/upload-cw-clients.yaml

@@ -25,6 +25,8 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
 
       - name: Create mount directories
         run: mkdir -p "${HOME}/.cargo/registry" "$(pwd)"/target