* Improved support and user experience for HCP Packer registry - [GH-11304](https://github.com/hashicorp/packer/pull/11304) [GH-11315](https://github.com/hashicorp/packer/pull/11315) [GH-11320](https://github.com/hashicorp/packer/pull/11320) [GH-11319](https://github.com/hashicorp/packer/pull/11319)
* core: Show successful message upon successful packer validate - [GH-11337](https://github.com/hashicorp/packer/pull/11337)
* core: Allow use in top level source variables in a build.source block - [GH-11318](https://github.com/hashicorp/packer/pull/11318)
* core: Allow to use build variables in a post processor - [GH-11323](https://github.com/hashicorp/packer/pull/11323)
* packer init: better error handling. - [GH-11330](https://github.com/hashicorp/packer/pull/11330)
### NOTES:
### Plugin Breakout:
* The code of the Scaleway builder was handed over to the scaleway org
* The code of the Scaleway builder was handed over to the scaleway org [GH-11298](https://github.com/hashicorp/packer/pull/11298) [GH-11296](https://github.com/hashicorp/packer/pull/11296)
### IMPROVEMENTS:
* Improved support and user experience for HCP Packer registry.