Upgrade proxy crates to edition 2024 (#10942)

This upgrades the `proxy/` crate as well as the forked libraries in
`libs/proxy/` to edition 2024.

Also reformats the imports of those forked libraries via:

```
cargo +nightly fmt -p proxy -p postgres-protocol2 -p postgres-types2 -p tokio-postgres2 -- -l --config imports_granularity=Module,group_imports=StdExternalCrate,reorder_imports=true
```

It can be read commit-by-commit: the first commit has no formatting
changes, only changes to accomodate the new edition.

Part of #10918

proxy/src/cache/project_info.rs

@@ -1,12 +1,12 @@
 use std::collections::HashSet;
 use std::convert::Infallible;
-use std::sync::atomic::AtomicU64;
 use std::sync::Arc;
+use std::sync::atomic::AtomicU64;
 use std::time::Duration;
 
 use async_trait::async_trait;
 use clashmap::ClashMap;
-use rand::{thread_rng, Rng};
+use rand::{Rng, thread_rng};
 use smol_str::SmolStr;
 use tokio::sync::Mutex;
 use tokio::time::Instant;

proxy/src/cache/timed_lru.rs

@@ -11,11 +11,11 @@ use std::time::{Duration, Instant};
 //   This severely hinders its usage both in terms of creating wrappers and supported key types.
 //
 // On the other hand, `hashlink` has good download stats and appears to be maintained.
-use hashlink::{linked_hash_map::RawEntryMut, LruCache};
+use hashlink::{LruCache, linked_hash_map::RawEntryMut};
 use tracing::debug;
 
 use super::common::Cached;
-use super::{timed_lru, Cache};
+use super::{Cache, timed_lru};
 
 /// An implementation of timed LRU cache with fixed capacity.
 /// Key properties: