v0.12.6

What's Changed

• chore(sonar): define a constant instead of duplicating literal by @jmastr in #474
• refactor: reduce cognitive complexity by @jmastr in #475
• minor thing: using the defined function by @eckelj in #476
• refactor(mqtt): defer unlock where applicable by @jmastr in #477
• 384 remove client implementation to correct client after upgrade by @LaurentMontBlanc in #478
• refactor configs by @jmastr in #479

Full Changelog: v0.12.5...v0.12.6