v5.5.8

Dependency updates.

• Bump actions/checkout from 3 to 4 by @dependabot in #224
• Bump actions/setup-node from 3 to 4 by @dependabot in #225
• SugarClient: Bump Primus to 8.0.9 by @eatyourgreens in #226

Full Changelog: v5.5.7...v5.5.8