Release 0.8.27 (#1545)

packages/providers/replicate/package.json

packages/providers/vercel/CHANGELOG.md

packages/providers/vercel/package.json

packages/providers/vllm/CHANGELOG.md

packages/providers/vllm/package.json

packages/readers/CHANGELOG.md

packages/readers/package.json

packages/workflow/CHANGELOG.md

packages/workflow/package.json

pnpm-lock.yaml

unit/CHANGELOG.md

unit/package.json