python-dotenv: bump to 1.2.2

python-dotenv: bump to 1.2.2

Changes since 1.0.1:
- Added support for Python 3.14 (including free-threaded build)
- CLI now forwards flags directly to commands
- Improved symlink handling with explicit follow_symlinks option
- Added FIFO file support on Unix systems
- Changed file mode preservation to maintain original permissions

Also add test.sh to verify dotenv_values parsing and load_dotenv.

Note: PyPI renamed the source tarball from python-dotenv-*.tar.gz
to python_dotenv-*.tar.gz; add PYPI_SOURCE_NAME accordingly.

Link: https://github.com/theskumar/python-dotenv/blob/main/CHANGELOG.md
Signed-off-by: Alexandru Ardelean <redacted>