Update dependency karma-firefox-launcher to v2.1.1

Author: renovate-bot

package.json

@@ -47,7 +47,7 @@
     "karma-chrome-launcher": "3.1.0",
     "karma-cli": "2.0.0",
     "karma-coverage": "2.0.3",
-    "karma-firefox-launcher": "2.1.0",
+    "karma-firefox-launcher": "2.1.1",
     "karma-mocha": "2.0.1",
     "karma-safari-launcher": "1.0.0",
     "karma-spec-reporter": "0.0.32",

yarn.lock

@@ -4775,10 +4775,10 @@ karma-coverage@2.0.3:
     istanbul-reports "^3.0.0"
     minimatch "^3.0.4"
 
-karma-firefox-launcher@2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-2.1.0.tgz#d0d328c93dfcf9b46f1ac83b4bb32f43aadb2050"
-  integrity sha512-dkiyqN2R6fCWt78rciOXJLFDWcQ7QEQi++HgebPJlw1y0ycDjGNDHuSrhdh48QG02fzZKK20WHFWVyBZ6CPngg==
+karma-firefox-launcher@2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-2.1.1.tgz#6457226f8e4f091b664cef79bb5d39bf1e008765"
+  integrity sha512-VzDMgPseXak9DtfyE1O5bB2BwsMy1zzO1kUxVW1rP0yhC4tDNJ0p3JoFdzvrK4QqVzdqUMa9Rx9YzkdFp8hz3Q==
   dependencies:
     is-wsl "^2.2.0"
     which "^2.0.1"