BDE-2483 - Typing change of tags mapping

[LynxEko]

BDE-2483

This PR is part of a series

💡 Context

While reviewing the library to do a talk about pypendency I have found some possible issues.

There is currently a warning in this line:

The issue is that we type _tags_mapping as a dict[tag, list(str)] here

so there is a mismatch with the defined type and the actual value

typing the _tags_mapping with the proper type solves the warning.

📖 Summary

This PR changes the type definition of _tags_mapping to dict[tag, set(str)]

🧪 How should this be manually tested?

You can manually run the tests with:

docker build . -t pypendency-dev
docker run -v $(pwd)/.:/usr/src/app pypendency-dev bash -c "pipenv run make run-tests"

[jorgemo-fever]

If we are modifying this, I think that we can also use the built-in types (dict instead of Dict, set instead of Set) to avoid adding an unneeded dependency. WDYT?

[LynxEko]

I'd love this, however the package still targets python 3.8, and it does not have the built-in types 😢

[andrsdt]

Tiny clarification: Built-in types are supported (like set), but they're not subscriptable (like set[str]).
Anyway, as you say, we can't use it here 🙁 we will drop support for 3.8 soon™ 🔥

[eduvives]

Before:

After:

Well spotted!
✅ The warning no longer appears on the corresponding line.

Tests still Pass:

Screen.Recording.2025-06-04.at.11.31.24.mov

[andrsdt]

LGTM ✅

Great job guys! 🔝🥇