message: build: fix vega and vega-lite version
diff: "d3-scale": "^3.0.1",
  "d3-time": "^1.0.11",
  "lodash": "^4.17.15",
  - "vega": "^5.4.0",
  - "vega-expression": "^2.6.0",
  - "vega-lite": "^3.4.0"
  + "vega": "5.6.0",
  + "vega-expression": "^2.6.2",
  + "vega-lite": "3.4.0"
  },
  "peerDependencies": {
  "@superset-ui/color": "^0.12.0",
  