Bump semver from 6.3.0 to 7.1.1

Bumps [semver](https://github.com/npm/node-semver) from 6.3.0 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@v6.3.0...v7.1.1)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -87,7 +87,7 @@
     "prettier": "^1.19.1",
     "qunit-dom": "^0.9.2",
     "sass": "^1.24.0",
-    "semver": "^6.3.0",
+    "semver": "^7.1.1",
     "timekeeper": "^2.2.0"
   },
   "engines": {