Update rollup to 1.31.1 (close #7295)

Update mocha to 7.0.1 (close #7291)

package.json

@@ -90,7 +90,7 @@
     "mapillary-js": "~2.20.0",
     "mapillary_sprite_source": "^1.8.0",
     "minimist": "^1.2.0",
-    "mocha": "^6.2.2",
+    "mocha": "^7.0.1",
     "mocha-phantomjs-core": "^2.1.0",
     "name-suggestion-index": "4.0.0",
     "npm-run-all": "^4.0.0",
@@ -98,7 +98,7 @@
     "osm-community-index": "2.0.0",
     "phantomjs-prebuilt": "~2.1.11",
     "request": "^2.88.0",
-    "rollup": "~1.29.1",
+    "rollup": "~1.31.1",
     "rollup-plugin-includepaths": "~0.2.3",
     "rollup-plugin-progress": "^1.1.1",
     "rollup-plugin-visualizer": "~3.3.1",