Fix #24081 - lsp diagnostic code type conversion (#24347)

- **store `buffer::Diagnostic`as NumberOrString instead of assuming
String**
- **update zed-industries/lsp-types rev**

Closes #24081

Release Notes:

- Fixed an issue where language server diagnostic codes would be converted to strings leading to errors with some language servers

crates/diagnostics/src/diagnostics.rs

@@ -933,7 +933,7 @@ fn diagnostic_header_renderer(diagnostic: Diagnostic) -> RenderBlock {
                             .when_some(diagnostic.code.as_ref(), |stack, code| {
                                 stack.child(
                                     div()
-                                        .child(SharedString::from(format!("({code})")))
+                                        .child(SharedString::from(format!("({code:?})")))
                                         .text_color(color.text_muted),
                                 )
                             }),