Remove unneeded 'static lifetimes on &strs in constants (#8698)

This PR removes unneeded `'static` lifetimes on `&str`s stored in
`const` declarations.

This addresses some Clippy lints about
[`redundant_static_lifetimes`](https://rust-lang.github.io/rust-clippy/master/index.html#/redundant_static_lifetimes).

In item-level `const` declarations we can rely on lifetime elision and
use the default `'static` lifetime.

Note that associated constants still require an explicit `'static`
lifetime, as explained in
https://github.com/rust-lang/rust/issues/115010.

Release Notes:

- N/A

crates/collab/src/main.rs

@@ -20,7 +20,7 @@ use tracing_log::LogTracer;
 use tracing_subscriber::{filter::EnvFilter, fmt::format::JsonFields, Layer};
 use util::ResultExt;
 
-const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+const VERSION: &str = env!("CARGO_PKG_VERSION");
 const REVISION: Option<&'static str> = option_env!("GITHUB_SHA");
 
 #[tokio::main]