Use const over static for string literals (#18635)

I noticed a few places where we were storing `&'static str`s in
`static`s instead of `const`s.

This PR updates them to use `const`.

Release Notes:

- N/A

crates/collab/src/api/events.rs

@@ -23,7 +23,7 @@ use telemetry_events::{
 };
 use uuid::Uuid;
 
-static CRASH_REPORTS_BUCKET: &str = "zed-crash-reports";
+const CRASH_REPORTS_BUCKET: &str = "zed-crash-reports";
 
 pub fn router() -> Router {
     Router::new()