Remove dependency on fibers (#10902)

config/webpack/rules/css.js

@@ -21,7 +21,6 @@ module.exports = {
     {
       loader: 'sass-loader',
       options: {
-        fiber: require('fibers'),
         implementation: require('sass'),
         sourceMap: true,
       },

package.json

@@ -92,7 +92,6 @@
     "escape-html": "^1.0.3",
     "exif-js": "^2.3.0",
     "express": "^4.17.1",
-    "fibers": "^3.1.1",
     "file-loader": "^3.0.1",
     "font-awesome": "^4.7.0",
     "glob": "^7.1.1",

yarn.lock

@@ -3014,7 +3014,7 @@ detect-file@^1.0.0:
   resolved "https://registry.yarnpkg.com/detect-file/-/detect-file-1.0.0.tgz#f0d66d03672a825cb1b73bdb3fe62310c8e552b7"
   integrity sha1-8NZtA2cqglyxtzvbP+YjEMjlUrc=
 
-detect-libc@^1.0.2, detect-libc@^1.0.3:
+detect-libc@^1.0.2:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
   integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
@@ -3810,13 +3810,6 @@ fbjs@^0.8.4:
     setimmediate "^1.0.5"
     ua-parser-js "^0.7.18"
 
-fibers@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/fibers/-/fibers-3.1.1.tgz#0238902ca938347bd779523692fbeefdf4f688ab"
-  integrity sha512-dl3Ukt08rHVQfY8xGD0ODwyjwrRALtaghuqGH2jByYX1wpY+nAnRQjJ6Dbqq0DnVgNVQ9yibObzbF4IlPyiwPw==
-  dependencies:
-    detect-libc "^1.0.3"
-
 figgy-pudding@^3.5.1:
   version "3.5.1"
   resolved "https://registry.yarnpkg.com/figgy-pudding/-/figgy-pudding-3.5.1.tgz#862470112901c727a0e495a80744bd5baa1d6790"