fix(deps): chacha20 0.10.2 — 0.10.1 was yanked

[piekstra]

What

Lockfile-only bump: cargo update -p chacha20 moves chacha20 0.10.1 -> 0.10.2. No manifest change; the transitive range already admits 0.10.2.

Why

chacha20 0.10.1 was yanked on 2026-08-27. This repo's deny.toml sets yanked = "deny", so cargo-deny (the audit / deny / secrets job) fails on any PR until the lock moves. Same fix as the rest of the family sweep, applied pre-emptively here.

Gate

Mirrored locally before merge: repo gate (make verify or the CI-equivalent) plus cargo deny check; CI must also be green.

[piekstra-dev]

Automated PR Review

Reviewed commit: 15a2d38ac760
Profile: reviewer - Posting as: piekstra-dev

Summary

Reviewer	Findings
rust:implementation-tests	0
security:code-auditor	0

Reviewer Coverage

• rust:implementation-tests — complete (broad); skipped: none; constraints: Cargo.lock is a generated dependency-version bump (chacha20 0.10.1 -> 0.10.2) with no source or test code changes, so this agent's checks (error handling, resource/lifetime handling, test coverage, etc.) do not apply.
• security:code-auditor — complete (broad); skipped: none; constraints: none

0 PR discussion threads considered. 0 summarized; 0 resolved.

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Completed in 36s | ~$0.43 (est.) | claude-sonnet-5 | cr 0.10.289

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Model	claude-sonnet-5
Reviewers	rust:implementation-tests, security:code-auditor
Engine	claude_cli · claude-sonnet-5
Reviewed by	cr · piekstra-dev
Duration	36s wall · 44s compute
Cost	~$0.43 (est.)
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