build(deps-dev): bump semver from 5.7.1 to 7.1.1

Bumps [semver](https://github.com/npm/node-semver) from 5.7.1 to 7.1.1.
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/master/CHANGELOG.md)
- [Commits](npm/node-semver@v5.7.1...v7.1.1)

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

package.json

@@ -121,7 +121,7 @@
     "reflux": "^6.4.1",
     "reflux-state-mixin": "^0.7.0",
     "rimraf": "^2.6.1",
-    "semver": "^5.1.0",
+    "semver": "^7.1.1",
     "shebang-loader": "0.0.1",
     "sinon": "^7.3.2",
     "sinon-chai": "^2.11.0",