chore(main): release 0.18.1

[droplet-bot]

🤖 I have created a release beepboop

0.18.1 (2025-12-24)

Miscellaneous

• cli,model: add instill.yaml optional fields (2a65ec1)
• deps-dev: bump pyinstaller from 5.13.1 to 6.0.0 (#289) (592e5d7)
• deps: bump ray from 2.47.0 to 2.52.0 (#291) (71a14da)
• python: bump up default python support to 3.12 (4668d91)

Refactor

• api: update for CE protobuf refactoring and Python 3.13 support (#290) (a6f16a8)

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Note

Cuts the 0.18.1 release with updated metadata and changelog.

• Bump version to 0.18.1 in pyproject.toml and release-please/manifest.json
• Add 0.18.1 entry to CHANGELOG.md noting: instill.yaml optional fields; dev dep bump pyinstaller 5.13.1→6.0.0; dep bump ray 2.47.0→2.52.0; default Python support to 3.12; API updates for CE protobuf refactor and Python 3.13 support

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