Upgrade toolchain to nightly-2024-07-01 (rust-lang#3314)

Upgrade toolchain to `nightly-2024-07-01` so we're up to date. No other
changes are required.

Author: adpaco-aws

rust-toolchain.toml

@@ -2,5 +2,5 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 
 [toolchain]
-channel = "nightly-2024-06-29"
+channel = "nightly-2024-07-01"
 components = ["llvm-tools", "rustc-dev", "rust-src", "rustfmt"]