Log Message:
devel/ast-grep: update to 0.20.0

 - test: add test for error suppression in scan #1007
 - refactor: merge CombinedScan::scan and CombinedScan::diff #1011
 - feat: report error count instead of file count #1009
 - feat: suppress specific rule #1005
 - fix: skip suppressed error #1006
 - feat: support error/warning suppression #446
 - fix(deps): update babel monorepo da9a938
 - fix(deps): update dependency @swc/core to v1.4.8 d81365a
 - feat: add more states for rule suppression 41a058c