Bump the npm_and_yarn group across 1 directory with 4 updates

Bumps the npm_and_yarn group with 4 updates in the / directory: [grunt](https://github.com/gruntjs/grunt), [grunt-karma](https://github.com/karma-runner/grunt-karma), [karma](https://github.com/karma-runner/karma) and [phantomjs](https://github.com/Medium/phantomjs).


Updates `grunt` from 0.4.5 to 1.6.2
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt/compare/v0.4.5...v1.6.2)

Updates `grunt-karma` from 0.12.2 to 4.0.2
- [Release notes](https://github.com/karma-runner/grunt-karma/releases)
- [Changelog](https://github.com/karma-runner/grunt-karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/grunt-karma/compare/v0.12.2...v4.0.2)

Updates `karma` from 0.13.22 to 6.4.4
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma/compare/v0.13.22...v6.4.4)

Updates `phantomjs` from 1.9.20 to 2.1.7
- [Release notes](https://github.com/Medium/phantomjs/releases)
- [Commits](https://github.com/Medium/phantomjs/compare/v1.9.20...v2.1.7)

---
updated-dependencies:
- dependency-name: grunt
  dependency-version: 1.6.2
  dependency-type: direct:development
  dependency-group: npm_and_yarn
- dependency-name: grunt-karma
  dependency-version: 4.0.2
  dependency-type: direct:development
  dependency-group: npm_and_yarn
- dependency-name: karma
  dependency-version: 6.4.4
  dependency-type: direct:development
  dependency-group: npm_and_yarn
- dependency-name: phantomjs
  dependency-version: 2.1.7
  dependency-type: direct:development
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -41,12 +41,12 @@
     "core-js": "^2.4.1",
     "cross-env": "^3.1.4",
     "eslint": "^1.10.3",
-    "grunt": "^0.4.5",
+    "grunt": "^1.6.2",
     "grunt-cli": "^0.1.13",
     "grunt-contrib-nodeunit": "^0.4.1",
-    "grunt-karma": "^2.0.0",
+    "grunt-karma": "^4.0.2",
     "isparta-loader": "^2.0.0",
-    "karma": "^1.3.0",
+    "karma": "^6.4.4",
     "karma-chai": "0.1.0",
     "karma-chrome-launcher": "^2.0.0",
     "karma-coverage": "^1.1.1",
@@ -59,7 +59,7 @@
     "karma-webpack": "^1.8.1",
     "lolex": "^1.4.0",
     "mocha": "^2.3.2",
-    "phantomjs": "^1.9.18",
+    "phantomjs": "^2.1.7",
     "sinon": "^1.17.7",
     "sinon-chai": "^2.8.0",
     "webpack": "^2.2.1",