tests: require example-robot-data

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.2 → v16.0.3](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.2...v16.0.3)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.1 → v16.0.2](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.1...v16.0.2)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-clang-format: v16.0.0 → v16.0.1](https://github.com/pre-commit/mirrors-clang-format/compare/v16.0.0...v16.0.1)

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/psf/black: 23.1.0 → 23.3.0](https://github.com/psf/black/compare/23.1.0...23.3.0)

[pre-commit.ci] pre-commit autoupdate

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

updates:
- [github.com/pre-commit/mirrors-clang-format: v14.0.6 → v16.0.0](https://github.com/pre-commit/mirrors-clang-format/compare/v14.0.6...v16.0.0)
- [github.com/pre-commit/pre-commit-hooks: v4.3.0 → v4.4.0](https://github.com/pre-commit/pre-commit-hooks/compare/v4.3.0...v4.4.0)
- [github.com/psf/black: 22.8.0 → 23.1.0](https://github.com/psf/black/compare/22.8.0...23.1.0)
- [github.com/PyCQA/flake8: 5.0.4 → 6.0.0](https://github.com/PyCQA/flake8/compare/5.0.4...6.0.0)

require dynamic-graph >= 4.4.0

[Python] format

move doc/make CommandVoid 5-8 to dynamic-graph

ref. https://github.com/stack-of-tasks/dynamic-graph/issues/36

[CMake] fix link to parameter-server

ref https://github.com/stack-of-tasks/sot-core/pull/175