docs: 📝 document realease notes v2

Signed-off-by: Andy Augustin <dev@andreas-augustin.org>

README.md

@@ -543,6 +543,9 @@ under the `Workflow permissions` section.
 
 ## Release Updates
 
+* `v2`
+  * `git lfs` is no default anymore. Enable with `is_git_lfs` parameter
+  * infrastructure change: now using [composite action][action-composite] instead of [docker action][action-docker] to be more flexible to combine more actions (file system permissions)
 * :warning: starting with version `v1` (`v1.0.0`) the `upstream_branch` variable default is not `main` anymore. It is now set to the remote default branch.
 * starting with version v0.5.2-draft the `templateversionrc` file is not needed anymore. You can delete that file from the target repositories.
 
@@ -638,6 +641,8 @@ specification. Contributions of any kind are welcome!
 [enabling-debug-logging]: https://docs.github.com/en/actions/managing-workflow-runs/enabling-debug-logging
 [deployment-keys]: https://docs.github.com/en/developers/overview/managing-deploy-keys#deploy-keys
 [action-triggers]: https://docs.github.com/en/actions/reference/events-that-trigger-workflows
+[action-composite]: https://docs.github.com/en/actions/creating-actions/creating-a-composite-action
+[action-docker]: https://docs.github.com/en/actions/creating-actions/creating-a-docker-container-action
 [template]: https://github.com/AndreasAugustin/template
 [marketplace]: https://github.com/marketplace/actions/actions-template-sync
 [self-usage]: https://github.com/AndreasAugustin/actions-template-sync/blob/main/.github/workflows/actions_template_sync.yml