src/bump_version.py

from pathlib import Path

import tomlkit
from packaging.version import Version

c_file = Path(__file__)
pyproject = c_file.parent.parent / "pyproject.toml"


with pyproject.open("r") as f:
    data = tomlkit.load(f)
    version = Version(data["project"]["version"])  # type: ignore
    data["project"]["version"] = str(  # type: ignore
        Version(f"{version.major}.{version.minor}.{version.micro + 1}")
    )

with pyproject.open("w") as f:
    tomlkit.dump(data, f)