Make dependabot respect granularity of previous semversioning

[DanielNoord]

For context this PR: DanielNoord/pydocstringformatter#63.

Dependabot updates the version to 3 while the previous version was specified to a patch number (2.3.2). The associated release does have a patch number (3.0.0), see: https://github.com/actions/setup-python.
It would be good if dependabot respects previous "granularity" in semversions and adds a similar level of specificity when upgrading a dependency.

[xt0rted]

Sounds like the same issue as #4768

[hemberger]

I've been having this issue off and on for a couple years (see, e.g., #3704).

Here's another example I just encountered, bumping codecov/codecov-action from v1 to v2.1.0:
MechanicalSoup/MechanicalSoup#387

[bewuethr]

@hemberger That seems related, but going in the other direction, right? From less specific to more specific.

[bewuethr]

Added to a discussion at community/community#12303

[exvuma]

This should be fixed in #4953 so closing out 😄