Offer Dependabot command line interface to manually update dependencies with same commit syntax

[mman]

Is there an existing issue for this?

• I have searched the existing issues

Feature description

It's great to use Dependabot with various languages and various dependencies automatically on GitHub.

However at times a project maintainer goes though the dependencies and updates them manually.

And then commits the dependency bumps to GitHub.

And struggles to figure out what should be the proper message format.

It would be cool if Dependabot offered a command line interface that would allow simulating Dependabot runs for one or more dependencies the same way it is done via GitHub actions, so that these periodic manual dependency bumps can be done the same way as they would happen at some point time in the future via GitHub.