Bump karma-firefox-launcher from 1.3.0 to 2.0.0 (#31987)

Bumps [karma-firefox-launcher](https://github.com/karma-runner/karma-firefox-launcher) from 1.3.0 to 2.0.0.
- [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](karma-runner/karma-firefox-launcher@v1.3.0...v2.0.0)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -117,7 +117,7 @@
     "karma-chrome-launcher": "^3.1.0",
     "karma-coverage-istanbul-reporter": "^3.0.3",
     "karma-detect-browsers": "^2.3.3",
-    "karma-firefox-launcher": "^1.3.0",
+    "karma-firefox-launcher": "^2.0.0",
     "karma-jasmine": "^4.0.1",
     "karma-jasmine-html-reporter": "^1.5.4",
     "karma-rollup-preprocessor": "^7.0.5",