[SECURITY] Update library CKEditor to 4.11.1

CKEditor 4.11 was released including a XSS fix where
an attacker could add invalid HTML markup by switching
to the Source mode of CKEditor and back.

Used commands:
  cd Build/
  yarn add ckeditor#4.11.1 --dev
  grunt build

Resolves: #84800
Releases: master, 8.7
Security-Commit: 4a44c536a4f80b1fbf4599070761368e7919980c
Security-Bulletin: TYPO3-CORE-SA-2018-005
Change-Id: I50412f24393c306a989dac448d7c0ee66a6760fb
Reviewed-on: https://review.typo3.org/59099
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>

Build/package.json

@@ -24,7 +24,7 @@
     "bootstrap-sass": "^3.3.7",
     "bootstrap-slider": "^9.7.3",
     "chosen-js": "^1.7.0",
-    "ckeditor": "4.10.1",
+    "ckeditor": "^4.11.1",
     "ckeditor-wordcount-plugin": "^1.17.2",
     "codemirror": "^5.40.0",
     "cropper": "^2.3.4",

Build/yarn.lock

@@ -1071,10 +1071,10 @@ ckeditor-wordcount-plugin@^1.17.2:
   resolved "https://registry.yarnpkg.com/ckeditor-wordcount-plugin/-/ckeditor-wordcount-plugin-1.17.2.tgz#9bd528bcf3f2898948fc056d8fdbe80106e87381"
   integrity sha512-CAS64xhKCQJE3TGIFQECBIrGNFp4neFRdhB4JQ5DiCvnZ36VXd7UydJm6UiIBXZEUag9ykdBe4n5anYIkG6sNA==
 
-ckeditor@4.10.1:
-  version "4.10.1"
-  resolved "https://registry.yarnpkg.com/ckeditor/-/ckeditor-4.10.1.tgz#e0230b05a5470ef070be9ab9ba444fea418ebc78"
-  integrity sha512-T6y4BH9ml+0F1cuSqjOWSZJtNuunVm/IbZl0KWNgRUsWEiwQQxhzA0mvSVLzujjsQkTMn9oTGcDd31/eozCAWg==
+ckeditor@^4.11.1:
+  version "4.11.1"
+  resolved "https://registry.yarnpkg.com/ckeditor/-/ckeditor-4.11.1.tgz#ace84b209573abf2b8430c214500e68ab06e7a14"
+  integrity sha512-UhHe02cc/wWJquDQZysEgh0ohLMEMU56zDx+s8prDdjylY/aBDY2xdIiIpbgCBTXdjhrEPIAPyiDS9g3RxYXig==
 
 clap@^1.0.9:
   version "1.2.3"