Update the nightly toolchain (#822)

Author: crazytonyli

Makefile

@@ -17,7 +17,7 @@ swift_package_platform_watchos = $(call swift_package_platform_version,watchos)
 swift_package_platform_tvos = $(call swift_package_platform_version,tvos)
 
 # Required for supporting tvOS and watchOS. We can update the nightly toolchain version if needed.
-rust_nightly_toolchain := nightly-2024-12-08
+rust_nightly_toolchain := nightly-2025-07-29
 
 clean:
 	@# Help: Remove untracked files from the project via Git.