requirements.txt files should be automatically generated in CI if the PR is from dependabot

[KevinMGranger]

Feature description

When dependabot opens a PR to change a dep version, it fails CI because it checks to see if the poetry deps and requirements.txt deps are in sync.

We could make CI check if this change came from dependabot, make that change, and push it to the PR.

How this will help you

Merging dependabot PRs will be easier, and help reduce noise.

Feature priority

⏳ Low priority, it does not block me of using Pelorus

Code of Conduct

• [X] I agree to follow Pelorus's Code of Conduct

[mateusoliveira43]

Possible solution https://github.com/dependabot/dependabot-core/issues/935#issuecomment-603882655