Revert "Update cairo (#1144)"

This reverts commit 4c799b5.

extensions/scarb-cairo-language-server/src/main.rs

@@ -1,3 +1,8 @@
-fn main() {
-    cairo_lang_language_server::start()
+use cairo_lang_language_server::serve_language_service;
+use cairo_lang_utils::logging::init_logging;
+
+#[tokio::main]
+async fn main() {
+    init_logging(log::LevelFilter::Warn);
+    serve_language_service().await;
 }