[pre-commit.ci] pre-commit autoupdate

FIX: force system_clock

for more information, see https://pre-commit.ci

updates:
- [github.com/psf/black: 22.6.0 → 22.8.0](https://github.com/psf/black/compare/22.6.0...22.8.0)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v14.0.5 → v14.0.6](https://github.com/pre-commit/mirrors-clang-format/compare/v14.0.5...v14.0.6)
- [github.com/psf/black: 22.3.0 → 22.6.0](https://github.com/psf/black/compare/22.3.0...22.6.0)
- [github.com/PyCQA/flake8: 4.0.1 → 5.0.4](https://github.com/PyCQA/flake8/compare/4.0.1...5.0.4)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v14.0.4-1 → v14.0.5](https://github.com/pre-commit/mirrors-clang-format/compare/v14.0.4-1...v14.0.5)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v13.0.1 → v14.0.4-1](https://github.com/pre-commit/mirrors-clang-format/compare/v13.0.1...v14.0.4-1)
- [github.com/pre-commit/pre-commit-hooks: v4.2.0 → v4.3.0](https://github.com/pre-commit/pre-commit-hooks/compare/v4.2.0...v4.3.0)

format

fix submodule url

Change license to BSD 2 clauses.

[CMake] Switch to C++14

As include/hpp/util/serialization.hh use `std::enable_if_t`, which is
only available in C++ >= 14