[Devsetup] Install the latest rust toolchain

Author: JoshLind

scripts/dev_setup.sh

@@ -466,8 +466,9 @@ function install_rustup_components_and_nightly {
   rustup show
   rustup toolchain list -v
 
-  echo "Updating rustup and installing rustfmt & clippy"
+  echo "Updating rustup and installing the latest rustc, rustfmt & clippy"
   rustup update
+  rustup toolchain install stable # Install the latest rustc to ensure that dependencies can always be built (even if we're behind)
   rustup component add rustfmt
   rustup component add clippy