Create registry dev environment

[Evi1Pumpkin]

We want to create a dev environment for our registry, for easy development without impacting production.

The idea

1. The dev environment will use a new DEV bucket.
2. We'll run the dev environment workflows through the Actions screen. The workflows will run separately, so we can test each part of the flow without triggering the whole process.
3. Before triggering a workflow we'll choose the workflow's branch and the environment from the dropdowns before each run:

4. On dev environment, we'll commit and push changes in the registry's data to a new generated branch called <original-branch-name>-bump-versions-<unix-timestamp>. So we won't make the branch dirty with unwanted changes.

Changes

1. Cron moved to bump-and-publish-versions-prod.yml.
2. bump-versions.yml and generate-and-deploy.yml can now be triggered as sub-workflows (by bump-and-publish-versions-prod.yml), or dispatched from the actions screen for development porpuses.
3. bump-versions.yml and generate-and-deploy.yml get the environment setting as an input.
4. If bump-versions.yml was triggered with the development env, it'll push the changes to a new branch.

How to use the registry dev environment

I created a branch with changes and want to run it targeting the dev registry. The branch is called Evi1Pumpkin-patch-1.

1. I go to the Actions screen, choose the Bump Provider and Module Versions workflow, and run it using my new branch:

2. The modules and providers' data is pushed to a new branch called Evi1Pumpkin-patch-1-bump-versions-1702366742. I can get it from the Print Branch step. If you have a better idea on how to make it more user-friendly I would love to hear.

3. When I run `Generate and Sync Files` workflow, I supply the new branch as the source of the code and the providers and modules branch:

Fixes #64

[ghost]

I don't know the codebase enough to approve or request changes, but it seems to me that the upload would still happen to the same bucket. From what I read, this is not the intention? (Also, added some nitpicks.) Nevermind, I completely misread the code.