Rebase: warnings

[Example](https://github.com/dbt-labs/hub.getdbt.com/actions/runs/11898409812/job/33154844877#step:2:1184)

> [rebase](https://github.com/dbt-labs/hub.getdbt.com/actions/runs/11898409812/job/33154844877)
> The following actions uses node12 which is deprecated and will be forced to run on node16: linhbn123/rebase-pull-requests@v1.0.1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/
> rebase
> The following actions use a deprecated Node.js version and will be forced to run on node20: linhbn123/[rebase](https://github.com/dbt-labs/hub.getdbt.com/actions/runs/11898409812/job/33154844877)-pull-requests@v1.0.1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/
> [rebase](https://github.com/dbt-labs/hub.getdbt.com/actions/runs/11898409812/job/33154844877#step:2:7)
> The `save-state` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
> rebase
> The `save-state` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/