v4.2.0

What’s changed

Intermediate release, upgrading foundations, and fixing the snapshot warnings.

🚀 Enhancements

• Rename snapshot_exclude to backup_exclude @ludeeus (#226)
• Migrate JSON config to YAML @frenck (#272)

🧰 Maintenance

• Switch to centralized GitHub Action Workflows @frenck (#271)

⬆️ Dependency updates

• ⬆️ Bump dessant/lock-threads from 2.1.1 to 2.1.2 @dependabot (#240)
• ⬆️ Bump docker/build-push-action from 2.6.1 to 2.7.0 @dependabot (#242)
• ⬆️ Bump frenck/action-addon-linter from 2.2 to 2.3 @dependabot (#244)
• ⬆️ Bump frenck/action-addon-linter from 2.3 to 2.4.1 @dependabot (#256)
• ⬆️ Bump docker/setup-buildx-action from 1.5.1 to 1.6.0 @dependabot (#247)
• ⬆️ Bump creyD/prettier_action from 3.3 to 4.0 @dependabot (#248)
• ⬆️ Upgrade lock-threads workflow to 3.0.0 @frenck (#261)
• ⬆️ Upgrades add-on base image to 10.1.1 @frenck (#260)
• ⬆️ Bump actions/checkout from 2.3.4 to 2.3.5 @dependabot (#264)
• ⬆️ Upgrades add-on base image to 10.2.0 @frenck (#273)
• ⬆️ Upgrades add-on base image to 10.2.2 @frenck (#275)