Switch default rust version to 1.73

Author: arik-so

.github/workflows/swift.yml

@@ -33,6 +33,10 @@ jobs:
                     sudo apt-get update
                     # sudo apt-get -y upgrade
                     sudo apt-get -y install cargo lld git g++ clang curl
+                    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+                    export PATH="$HOME/.cargo/bin:$PATH"
+                    rustup install 1.73.0
+                    rustup default 1.73.0
             -   name: Install Dependencies
                 uses: ./.github/actions/install-dependencies
                 with: