python-pyproject-metadata: update to 0.11.0

python-pyproject-metadata: update to 0.11.0

Update package to 0.11.0.

Changes since 0.9.1:

0.10.0:
- Added support for PEP 794 (METADATA 2.5) import-names and
  import-namespaces fields
- Dropped Python 3.7 support
- Fixed minimum required version of packaging dependency

0.11.0:
- Refactored internals to separate conversion and validation, yielding
  better error messages
- Added downstream project testing in CI
- Removed lingering PEP 621 terminology in favor of pyproject.toml
  terminology

Apply dos2unix

Signed-off-by: Alexandru Ardelean <redacted>