[Fix] canvas 이미지 URL 변환 오류 수정 - presigned URL로 변환 후 AI 처리 가능#199

gaeunee2 merged 2 commits intodevTeam-Proovy/Proovy-server:devfrom

fix/198-canvas-image-url-conversionTeam-Proovy/Proovy-server:fix/198-canvas-image-url-conversionCopy head branch name to clipboard