Adaptions to ruamel.yaml new API

[ikondov]

Closes #516

Summary

Starting from release 0.15, ruamel.yaml has introduced a new API. Starting with ruamel.yaml release 0.18 the old interface used in fireworks is depricated and removed. A future deprecation warning is shown with the releases in between. The warning turns into an AttributeError with ruamel.yaml >=18.0 (see issue #516 for more details).

Major changes:

• adapted all instances of yaml.safe_load() and yaml.safe_dump() to the new interface

Todos

If this is work in progress, what else needs to be done?

Checklist

• [x] Google format doc strings added. Check with ruff.
• [x] Type annotations included. Check with mypy.
• [x] Tests added for new features/fixes.
• [x] If applicable, new classes/functions/modules have duecredit @due.dcite decorators to reference relevant papers by DOI (example)

Tip: Install pre-commit hooks to auto-check types and linting before every commit:

pip install -U pre-commit
pre-commit install

[ikondov]

Unortunately, I had to increase the ruff line-length to 180 in pyproject.toml because there are very long lines (not from me) in one of the tests and pre-commit (as suggested in the pull request template) did not allow me to commit.