[CHIA-3933] enable asm feature for sha3 dependency

[arvidn]

This makes the keccak256 operator faster.

---

Note

Low Risk
Low risk dependency/config change; main risk is build portability if some targets/toolchains don’t support the sha3 asm feature.

Overview
Enables the sha3 crate’s asm feature to use optimized assembly implementations for the keccak256 operator.

Updates Cargo.lock accordingly (including bumping the keccak transitive dependency to 0.1.6).

^{Written by Cursor Bugbot for commit d31d083. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

[coveralls-official]

Pull Request Test Coverage Report for Build 22546629127

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 88.222%

---

Totals
Change from base Build 22327026712:	0.0%
Covered Lines:	6831
Relevant Lines:	7743

---

💛 - Coveralls