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

libs/proxy/postgres-protocol2/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "postgres-protocol2"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 license = "MIT/Apache-2.0"
 
 [dependencies]

libs/proxy/postgres-protocol2/src/authentication/sasl.rs

@@ -1,14 +1,12 @@
 //! SASL-based authentication support.
 
+use std::fmt::Write;
+use std::{io, iter, mem, str};
+
 use hmac::{Hmac, Mac};
 use rand::{self, Rng};
 use sha2::digest::FixedOutput;
 use sha2::{Digest, Sha256};
-use std::fmt::Write;
-use std::io;
-use std::iter;
-use std::mem;
-use std::str;
 use tokio::task::yield_now;
 
 const NONCE_LENGTH: usize = 24;
@@ -493,11 +491,9 @@ mod test {
         let nonce = "9IZ2O01zb9IgiIZ1WJ/zgpJB";
 
         let client_first = "n,,n=,r=9IZ2O01zb9IgiIZ1WJ/zgpJB";
-        let server_first =
-            "r=9IZ2O01zb9IgiIZ1WJ/zgpJBjx/oIRLs02gGSHcw1KEty3eY,s=fs3IXBy7U7+IvVjZ,i\
+        let server_first = "r=9IZ2O01zb9IgiIZ1WJ/zgpJBjx/oIRLs02gGSHcw1KEty3eY,s=fs3IXBy7U7+IvVjZ,i\
              =4096";
-        let client_final =
-            "c=biws,r=9IZ2O01zb9IgiIZ1WJ/zgpJBjx/oIRLs02gGSHcw1KEty3eY,p=AmNKosjJzS3\
+        let client_final = "c=biws,r=9IZ2O01zb9IgiIZ1WJ/zgpJBjx/oIRLs02gGSHcw1KEty3eY,p=AmNKosjJzS3\
              1NTlQYNs5BTeQjdHdk7lOflDo5re2an8=";
         let server_final = "v=U+ppxD5XUKtradnv8e2MkeupiA8FU87Sg8CXzXHDAzw=";
 

libs/proxy/postgres-protocol2/src/lib.rs

@@ -11,9 +11,10 @@
 //! set to `UTF8`. It will most likely not behave properly if that is not the case.
 #![warn(missing_docs, clippy::all)]
 
+use std::io;
+
 use byteorder::{BigEndian, ByteOrder};
 use bytes::{BufMut, BytesMut};
-use std::io;
 
 pub mod authentication;
 pub mod escape;

libs/proxy/postgres-protocol2/src/message/backend.rs

@@ -1,13 +1,13 @@
 #![allow(missing_docs)]
 
+use std::io::{self, Read};
+use std::ops::Range;
+use std::{cmp, str};
+
 use byteorder::{BigEndian, ByteOrder, ReadBytesExt};
 use bytes::{Bytes, BytesMut};
 use fallible_iterator::FallibleIterator;
 use memchr::memchr;
-use std::cmp;
-use std::io::{self, Read};
-use std::ops::Range;
-use std::str;
 
 use crate::Oid;
 

libs/proxy/postgres-protocol2/src/message/frontend.rs

@@ -1,13 +1,13 @@
 //! Frontend message serialization.
 #![allow(missing_docs)]
 
+use std::error::Error;
+use std::{io, marker};
+
 use byteorder::{BigEndian, ByteOrder};
 use bytes::{Buf, BufMut, BytesMut};
-use std::error::Error;
-use std::io;
-use std::marker;
 
-use crate::{write_nullable, FromUsize, IsNull, Oid};
+use crate::{FromUsize, IsNull, Oid, write_nullable};
 
 #[inline]
 fn write_body<F, E>(buf: &mut BytesMut, f: F) -> Result<(), E>

libs/proxy/postgres-protocol2/src/password/mod.rs

@@ -6,12 +6,13 @@
 //! side. This is good because it ensures the cleartext password won't
 //! end up in logs pg_stat displays, etc.
 
-use crate::authentication::sasl;
 use hmac::{Hmac, Mac};
 use rand::RngCore;
 use sha2::digest::FixedOutput;
 use sha2::{Digest, Sha256};
 
+use crate::authentication::sasl;
+
 #[cfg(test)]
 mod test;
 

libs/proxy/postgres-protocol2/src/types/mod.rs

@@ -1,11 +1,12 @@
 //! Conversions to and from Postgres's binary format for various types.
-use byteorder::{BigEndian, ReadBytesExt};
-use bytes::{BufMut, BytesMut};
-use fallible_iterator::FallibleIterator;
 use std::boxed::Box as StdBox;
 use std::error::Error;
 use std::str;
 
+use byteorder::{BigEndian, ReadBytesExt};
+use bytes::{BufMut, BytesMut};
+use fallible_iterator::FallibleIterator;
+
 use crate::Oid;
 
 #[cfg(test)]