pre-commit autoupdate

[pre-commit-ci]

updates:

• github.com/astral-sh/ruff-pre-commit: v0.15.12 → v0.15.15
• github.com/pre-commit/mirrors-mypy: v1.20.2 → v2.1.0

[shyuep]

🤖 Automated PR review (generated by Claude on behalf of @shyuep)

Dependency-only PR (ruff v0.15.12 → v0.15.15, mypy v1.20.2 → v2.1.0), but not safe to auto-merge — the updated hooks surface real failures that need fixes first:

• ruff (RUF059, ×4): Unpacked fig, ax = plt.subplots(...) in notebooks/direct/Example1_MPF2021.2.8.all.ipynb (cell 18). Easy fix: rename to _fig, ax (or _, ax).
• codespell (×many): New dictionary catches sav → save typos in real source — src/maml/models/dl/_atomsets.py:266,315, tests/base/test_model.py:22,26,28,49,51,53, MANIFEST.in:3 — plus a handful of false positives in the notebooks/direct/Example2_Ti-H.ipynb and Example3_MatPES_2DIRECT.ipynb notebooks (HaV, ure, fPr, nED, sEh, hgE, Ue). The source-tree typos are worth fixing; the notebook noise likely needs a codespell ignore entry.
• Test failure (test (ubuntu-latest, 3.11)): Unrelated — mp_api 401 against api.materialsproject.org (missing/expired MP API key in CI), not caused by the dep bump.

Recommend: fix the ruff RUF059 unpacks, run codespell -w on the source-tree hits, add ignore entries for the notebook false-positives, then merge.