Bump karma-firefox-launcher from 1.1.0 to 1.2.0

Bumps [karma-firefox-launcher](https://github.com/karma-runner/karma-firefox-launcher) from 1.1.0 to 1.2.0.
- [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/v1.1.0...v1.2.0)

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

package-lock.json

@@ -6911,10 +6911,21 @@
       }
     },
     "karma-firefox-launcher": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/karma-firefox-launcher/-/karma-firefox-launcher-1.1.0.tgz",
-      "integrity": "sha512-LbZ5/XlIXLeQ3cqnCbYLn+rOVhuMIK9aZwlP6eOLGzWdo1UVp7t6CN3DP4SafiRLjexKwHeKHDm0c38Mtd3VxA==",
-      "dev": true
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/karma-firefox-launcher/-/karma-firefox-launcher-1.2.0.tgz",
+      "integrity": "sha512-j9Zp8M8+VLq1nI/5xZGfzeaEPtGQ/vk3G+Y8vpmFWLvKLNZ2TDjD6cu2dUu7lDbu1HXNgatsAX4jgCZTkR9qhQ==",
+      "dev": true,
+      "requires": {
+        "is-wsl": "^2.1.0"
+      },
+      "dependencies": {
+        "is-wsl": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/is-wsl/-/is-wsl-2.1.1.tgz",
+          "integrity": "sha512-umZHcSrwlDHo2TGMXv0DZ8dIUGunZ2Iv68YZnrmCiBPkZ4aaOhtv7pXJKeki9k3qJ3RJr0cDyitcl5wEH3AYog==",
+          "dev": true
+        }
+      }
     },
     "karma-mocha": {
       "version": "1.3.0",