Fix generation of NodeJS API documentation

NodeJS API docs are out of sync with NodeJS C++ wrapper documentation
due to the doc build breaking back in Project-OSRM#4043.

The commit fixes the Node dev dependencies such that `npm run docs`
works again.

.babelrc

@@ -1,8 +1,7 @@
 {
     "plugins": ["transform-class-properties"],
     "presets": [
-        "stage-0",
-        "es2015",
-        "react"
+        "@babel/preset-env",
+        "@babel/preset-react"
     ]
 }

.travis.yml

@@ -63,8 +63,7 @@ matrix:
         - ${MASON} install clang-format 10.0.0
         - PATH=$(${MASON} prefix clang-format 10.0.0)/bin:${PATH} ./scripts/format.sh && ./scripts/error_on_dirty.sh
         - node ./scripts/validate_changelog.js
-        # See issue 4043
-        #- npm run docs && ./scripts/error_on_dirty.sh
+        - npm run docs && ./scripts/error_on_dirty.sh
       after_success:
 
     - os: linux