Handle recent pymc deprecation warnings

[wd60622]

MutableData -> Data
coords_mutable -> coords

Should a minimal version of PyMC be pinned?

[juanitorduz]

We have this https://github.com/pymc-labs/pymc-marketing/blob/main/pyproject.toml#L20 (we can control this). We need to make it consistent with https://github.com/pymc-labs/pymc-marketing/blob/main/.github/workflows/ci.yml#L10 🙈

[wd60622]

Maybe good to have lower as 5.13.0 instead of 5.12.0 and get rid of the mutable deprecation warnings? Think one minor release difference for that is not too much
#669
Ref: https://github.com/pymc-devs/pymc/releases/tag/v5.13.0