support Python 3.14

Loader: enable pickling

build(deps): bump mypy[mypyc] from 1.14.1 to 1.15.0

Bumps [mypy[mypyc]](https://github.com/python/mypy) from 1.14.1 to 1.15.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.14.1...v1.15.0)

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updated-dependencies:
- dependency-name: mypy[mypyc]
  dependency-type: direct:production
  update-type: version-update:semver-minor
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ci(mergify): upgrade configuration to current format (#891)

Co-authored-by: Mergify <37929162+mergify[bot]@users.noreply.github.com>

Prepare to release schema-salad 8.8.x (#896)

synchronize requirements.txt and pyproject.toml:build_depends

Bump pypa/cibuildwheel from 2.21.2 to 2.21.3 (#881)

Bumps [pypa/cibuildwheel](https://github.com/pypa/cibuildwheel) from 2.21.2 to 2.21.3.
- [Release notes](https://github.com/pypa/cibuildwheel/releases)
- [Changelog](https://github.com/pypa/cibuildwheel/blob/main/docs/changelog.md)
- [Commits](pypa/cibuildwheel@v2.21.2...v2.21.3)

---
updated-dependencies:
- dependency-name: pypa/cibuildwheel
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

cibuildwheel: skip build python 3.13 wheels (mypyc isn't ready yet)

Update flake8-bugbear requirement from <24.5 to <24.9 (#859)

Updates the requirements on [flake8-bugbear](https://github.com/PyCQA/flake8-bugbear) to permit the latest version.
- [Release notes](https://github.com/PyCQA/flake8-bugbear/releases)
- [Commits](PyCQA/flake8-bugbear@16.4.1...24.8.19)

---
updated-dependencies:
- dependency-name: flake8-bugbear
  dependency-type: direct:production
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Add feature to validate map types (#848)

* Add feature to validate map types

* Bump to 8.7 on account of new validation behavior for MapSchema.