Pipen-filters

- Bump pipen to 0.4

- ✨ Add path stat filters
- ⬆️ Bump pipen to 0.3.12
- 👷 Use latest actions in CI

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.1.2...0.2.0

- [🩹 Ignore loader if x is a dict for config](https://github.com/pwwang/pipen-filters/commit/8db48e299c2b96f5e4b19cf3ccbd5f86bdbbd08b)

- Add json_load, toml_load, config and as_path

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.1.0...0.1.1

- ✨ Add toml_load() to load from file
- 📌 Use rtoml instead of tomli

- 📌 Pin dep versions
- 🐛 Use on_init hook to init config