Bump karma-firefox-launcher from 2.0.0 to 2.1.0

Bumps [karma-firefox-launcher](https://github.com/karma-runner/karma-firefox-launcher) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/karma-runner/karma-firefox-launcher/releases)
- [Changelog](https://github.com/karma-runner/karma-firefox-launcher/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma-firefox-launcher/compare/v2.0.0...v2.1.0)

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

package-lock.json

@@ -9198,9 +9198,9 @@
       }
     },
     "karma-firefox-launcher": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/karma-firefox-launcher/-/karma-firefox-launcher-2.0.0.tgz",
-      "integrity": "sha512-BVq24Qwa//531LXRwvqu14ba04wcHNAX/m3lFF5v90w1rzUgck1FPBwQqlAIgKfkN5uHjT0PcxUqUNUctbQGVA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/karma-firefox-launcher/-/karma-firefox-launcher-2.1.0.tgz",
+      "integrity": "sha512-dkiyqN2R6fCWt78rciOXJLFDWcQ7QEQi++HgebPJlw1y0ycDjGNDHuSrhdh48QG02fzZKK20WHFWVyBZ6CPngg==",
       "dev": true,
       "requires": {
         "is-wsl": "^2.2.0",