Update rust version ci script

Author: nickgarfield

scripts/ci/rust-version.sh

@@ -23,13 +23,13 @@
 if [[ -n $RUST_STABLE_VERSION ]]; then
   stable_version="$RUST_STABLE_VERSION"
 else
-  stable_version=1.60.0
+  stable_version=1.73.0
 fi
 
 if [[ -n $RUST_NIGHTLY_VERSION ]]; then
   nightly_version="$RUST_NIGHTLY_VERSION"
 else
-  nightly_version=2022-02-24
+  nightly_version=2023-02-24
 fi