Upgrade Rust toolchain to 2025-05-16 (#4080)

Resolves #4078 

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Author: zhassan-aws

rust-toolchain.toml

@@ -2,5 +2,5 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 
 [toolchain]
-channel = "nightly-2025-05-14"
+channel = "nightly-2025-05-16"
 components = ["llvm-tools", "rustc-dev", "rust-src", "rustfmt"]