Release 0.9.3 (draft: version bump)

[mikkel]

DRAFT release-metadata branch for PyPI patchling 0.9.3. Do not merge until the reviewer (Ember) approves the release. Do not run release.sh: it pushes main and uploads to PyPI.

• patchling/__init__.py __version__ and .bumpversion.cfg current_version: 0.9.2 → 0.9.3. pyproject.toml reads the version dynamically. No test hard-codes the version, and the repo has no changelog file.

User-visible changes since 0.9.2 (4312732):

• filter_relevant raises TypeError on JS camelCase options (onBinary, maxBytes, ignore, retries, retryBaseMs, ...) with Python-spelling guidance (filter_relevant: clear TypeError mapping JS camelCase options to Python (parity with JS #7) #15). Any other unknown keyword still raises TypeError with Python's usual message.
• A truncated UTF-8 tail keeps its valid prefix at any length. Ignored paths are excluded before decode (Keep truncated UTF-8 prefixes and skip ignored binaries before decode #14).

Offline pytest on this branch (env -i, no API keys): 195 passed, 2 skipped (live tests).
No publish, no tag.