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/lsp/Cargo.toml

@@ -22,7 +22,7 @@ collections.workspace = true
 futures.workspace = true
 gpui.workspace = true
 log.workspace = true
-lsp-types = { git = "https://github.com/zed-industries/lsp-types", rev = "72357d6f6d212bdffba3b5ef4b31d8ca856058e7" }
+lsp-types = { git = "https://github.com/zed-industries/lsp-types", rev = "1fff0dd12e2071c5667327394cfec163d2a466ab" }
 parking_lot.workspace = true
 postage.workspace = true
 serde.workspace = true