chore(*): update all Karma-related packages except Karma

Karma can't be updated due to a bug:
karma-runner/karma#2582
that's already fixed on master but not released yet.

The updated karma-chrome-launcher adds support for ChromeHeadless &
ChromeCanaryHeadless launchers; test with:

    karma start karma-jqlite.conf.js --browsers=ChromeCanaryHeadless

The updated karma-firefox-launcher disables multi-process which may increase
stability on Jenkins.

Closes angular#15966

package.json

@@ -61,13 +61,13 @@
     "jasmine-reporters": "^2.2.0",
     "jquery": "^3.2.1",
     "karma": "^1.1.2",
-    "karma-browserstack-launcher": "^1.0.1",
-    "karma-chrome-launcher": "^1.0.1",
-    "karma-firefox-launcher": "^1.0.0",
-    "karma-jasmine": "^1.0.2",
-    "karma-junit-reporter": "^1.1.0",
+    "karma-browserstack-launcher": "^1.2.0",
+    "karma-chrome-launcher": "^2.1.0",
+    "karma-firefox-launcher": "^1.0.1",
+    "karma-jasmine": "^1.1.0",
+    "karma-junit-reporter": "^1.2.0",
     "karma-ng-scenario": "^1.0.0",
-    "karma-sauce-launcher": "^1.0.0",
+    "karma-sauce-launcher": "^1.1.0",
     "karma-script-launcher": "^1.0.0",
     "load-grunt-tasks": "^3.5.0",
     "lodash": "~2.4.1",

yarn.lock

@@ -3570,30 +3570,30 @@ junk@~1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/junk/-/junk-1.0.3.tgz#87be63488649cbdca6f53ab39bec9ccd2347f592"
 
-karma-browserstack-launcher@^1.0.1:
+karma-browserstack-launcher@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/karma-browserstack-launcher/-/karma-browserstack-launcher-1.2.0.tgz#acfa534835ba590041eef009c1169a219120bb5b"
   dependencies:
     browserstack "1.5.0"
     browserstacktunnel-wrapper "~1.4.2"
     q "~1.4.1"
 
-karma-chrome-launcher@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/karma-chrome-launcher/-/karma-chrome-launcher-1.0.1.tgz#be5ae7c4264f9a0a2e22e3d984beb325ad92c8cb"
+karma-chrome-launcher@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/karma-chrome-launcher/-/karma-chrome-launcher-2.1.0.tgz#c9769b655d80485236d88e4fbd77a768ff834e77"
   dependencies:
     fs-access "^1.0.0"
     which "^1.2.1"
 
-karma-firefox-launcher@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-1.0.0.tgz#e08af3ce42e39860c2952ea7b7eaa64d63508bdc"
+karma-firefox-launcher@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/karma-firefox-launcher/-/karma-firefox-launcher-1.0.1.tgz#ce58f47c2013a88156d55a5d61337c099cf5bb51"
 
-karma-jasmine@^1.0.2:
+karma-jasmine@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/karma-jasmine/-/karma-jasmine-1.1.0.tgz#22e4c06bf9a182e5294d1f705e3733811b810acf"
 
-karma-junit-reporter@^1.1.0:
+karma-junit-reporter@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/karma-junit-reporter/-/karma-junit-reporter-1.2.0.tgz#4f9c40cedfb1a395f8aef876abf96189917c6396"
   dependencies:
@@ -3604,7 +3604,7 @@ karma-ng-scenario@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/karma-ng-scenario/-/karma-ng-scenario-1.0.0.tgz#03315b27ee866f40443cf88bfebf7963f86543e1"
 
-karma-sauce-launcher@^1.0.0:
+karma-sauce-launcher@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/karma-sauce-launcher/-/karma-sauce-launcher-1.1.0.tgz#3d083cf5659d6736ab97bcee5d8acd86ad522212"
   dependencies:
@@ -5510,13 +5510,7 @@ sauce-connect-launcher@^0.17.0:
     lodash "3.10.1"
     rimraf "2.4.3"
 
-saucelabs@^1.3.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/saucelabs/-/saucelabs-1.4.0.tgz#b934a9af9da2874b3f40aae1fcde50a4466f5f38"
-  dependencies:
-    https-proxy-agent "^1.0.0"
-
-saucelabs@~1.3.0:
+saucelabs@^1.3.0, saucelabs@~1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/saucelabs/-/saucelabs-1.3.0.tgz#d240e8009df7fa87306ec4578a69ba3b5c424fee"
   dependencies: