Fix automation hashing clippy warning

[bgyss]

Summary

• address the clippy complaint in crates/recomp-cli/src/automation.rs by feeding a literal [0] to hasher.update so the borrow rule is satisfied
• leave existing automation behavior and the crab automation engine untouched, only removing the needless borrow Clippy flagged
• this unblock keeps the workspace clippy hook from failing when running cargo clippy --workspace --all-targets --all-features

Testing

• Not run (not requested)