RUST-2158 update edition & rand crate (#516)

---------

Co-authored-by: Isabel Atkinson <[email protected]>

Author: EagleBT007

Cargo.toml

@@ -13,7 +13,7 @@ description = "Encoding and decoding support for BSON in Rust"
 license = "MIT"
 readme = "README.md"
 repository = "https://github.com/mongodb/bson-rust"
-edition = "2018"
+edition = "2021"
 keywords = ["bson", "mongodb", "serde", "serialization", "deserialization"]
 categories = ["encoding"]
 
@@ -58,7 +58,7 @@ name = "bson"
 [dependencies]
 ahash = "0.8.0"
 chrono = { version = "0.4.15", features = ["std"], default-features = false, optional = true }
-rand = "0.8"
+rand = "0.9"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", features = ["preserve_order"] }
 indexmap = "2.1.0"

src/oid.rs

@@ -14,7 +14,7 @@ use std::{convert::TryInto, time::SystemTime};
 
 use hex::{self, FromHexError};
 use once_cell::sync::Lazy;
-use rand::{random, thread_rng, Rng};
+use rand::{random, rng, Rng};
 
 const TIMESTAMP_SIZE: usize = 4;
 const PROCESS_ID_SIZE: usize = 5;
@@ -27,7 +27,7 @@ const COUNTER_OFFSET: usize = PROCESS_ID_OFFSET + PROCESS_ID_SIZE;
 const MAX_U24: usize = 0xFF_FFFF;
 
 static OID_COUNTER: Lazy<AtomicUsize> =
-    Lazy::new(|| AtomicUsize::new(thread_rng().gen_range(0..=MAX_U24)));
+    Lazy::new(|| AtomicUsize::new(rng().random_range(0..=MAX_U24)));
 
 /// Errors that can occur during [`ObjectId`] construction and generation.
 #[derive(Clone, Debug)]