Add merge_dependabot_pull_requests recipe

[ahuang11]

Description

What's cooking?

Merge multiple dependabot pull requests across multiple repositories.

Not sure where to nest this in; automations?

Type of change

• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

New Recipe Checklist

• [x] My PR is in the format of Add <project-name> recipe
• [x] My recipe is reproducible and explains everything needed to run successfully. If my code has external dependencies, I make mention of them.
• [x] My code is easily understandable and/or well-commented.
• [ ] If my recipe requires a new category (e.g. creating a monitoring/ folder in devops/), I have encapsulated my project within its own subfolder so that others can add their own recipes as well.
• [x] If my recipe uses Prefect < 2.0, my code is within the prefect-v1-legacy/ folder.

[serinamarie]

Only thing left is if you could add this to the readme that would be appreciated! Otherwise looks great