Bump karma from 2.0.4 to 3.1.1 in /build

Bumps [karma](https://github.com/karma-runner/karma) from 2.0.4 to 3.1.1.
- [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/v2.0.4...v3.1.1)

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

build/package.json

@@ -16,7 +16,7 @@
     "jasmine-core": "~2.5.2",
     "jasmine-sinon": "^0.4.0",
     "jsdoc": "^3.5.5",
-    "karma": "^2.0.2",
+    "karma": "^3.1.1",
     "karma-coverage": "*",
     "karma-jasmine": "^1.1.2",
     "karma-jasmine-sinon": "^1.0.4",