v4.0.0-beta.180

• fix: nixpacks cache fixed.
• fix: compose buildpack - only add restart policy if it is empty.
• build: update nixpacks and packs versions.

What's Changed

• v4.0.0-beta.180 by @andrasbacsai in #1598

Full Changelog: v4.0.0-beta.179...v4.0.0-beta.180