fix: use rust 1.89.0 for xelis

it works for frostdart etc as well

Author: sneurlax

scripts/rust_version.sh

@@ -3,9 +3,9 @@
 
 set_rust_to_everything_else() {
   if rustup toolchain list | grep -q "1.85.1"; then
-    rustup default 1.85.1
+    rustup default 1.89.0
   else
-    echo "Rust version 1.85.1 is not installed. Please install it using 'rustup install 1.85.1'." >&2
+    echo "Rust version 1.89.0 is not installed. Please install it using 'rustup install 1.89.0'." >&2
     exit 1
   fi
 }