revert es6-promise and topojson-client versions

Author: archmoj

Diff for: package-lock.json

@@ -68,7 +68,7 @@
     "d3-interpolate": "1",
     "d3-sankey-circular": "0.33.0",
     "delaunay-triangulate": "^1.1.6",
-    "es6-promise": "^4.2.8",
+    "es6-promise": "^3.0.2",
     "fast-isnumeric": "^1.1.3",
     "gl-cone3d": "^1.3.1",
     "gl-contour2d": "^1.1.6",
@@ -111,7 +111,7 @@
     "superscript-text": "^1.0.0",
     "svg-path-sdf": "^1.1.3",
     "tinycolor2": "^1.4.1",
-    "topojson-client": "^3.0.0",
+    "topojson-client": "^2.1.0",
     "webgl-context": "^2.2.0",
     "world-calendars": "^1.0.3"
   },