Log Message:
ast-grep: update to 0.30.0.

#### 0.30.0

- **Breaking change:** feat: semi-structured tracing output
- fix: error=unused-suppression should change exit code
- refactor: move stdErr into inspect mod
- infra: switch to llvm-cov
- **Breaking change:** refactor: rename --tracing to --inspect
- **Breaking change:** refactor: remove --json format for tracing
- **Breaking change:** fix: remove builtin dart support
- **Breaking change:** fix: report unused suppression always
- fix(deps): update babel monorepo