chore: sass-loader version bump

`fiber` is also removed from dev deps as it won't be not used in
Node.js >= 16

Author: haoqunjiang

packages/@vue/cli-service/generator/index.js

@@ -41,11 +41,11 @@ module.exports = (api, options) => {
     const deps = {
       sass: {
         sass: '^1.32.7',
-        'sass-loader': '^11.0.1'
+        'sass-loader': '^12.0.0'
       },
       'dart-sass': {
         sass: '^1.32.7',
-        'sass-loader': '^11.0.1'
+        'sass-loader': '^12.0.0'
       },
       less: {
         'less': '^4.0.0',

packages/@vue/cli-service/package.json

@@ -113,9 +113,8 @@
     }
   },
   "devDependencies": {
-    "fibers": ">= 3.1.1 <6.0.0",
     "sass": "^1.32.7",
-    "sass-loader": "^11.0.1",
+    "sass-loader": "^12.0.0",
     "stylus-loader": "^6.1.0",
     "vue": "^2.6.14",
     "vue-router": "^3.5.1",

yarn.lock

@@ -10570,7 +10570,7 @@ fd-slicer@~1.1.0:
   dependencies:
     pend "~1.2.0"
 
-"fibers@>= 3.1.1 <6.0.0", fibers@^5.0.0:
+fibers@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/fibers/-/fibers-5.0.0.tgz#3a60e0695b3ee5f6db94e62726716fa7a59acc41"
   integrity sha512-UpGv/YAZp7mhKHxDvC1tColrroGRX90sSvh8RMZV9leo+e5+EkRVgCEZPlmXeo3BUNQTZxUaVdLskq1Q2FyCPg==
@@ -19365,10 +19365,10 @@ sane@^4.0.3:
     minimist "^1.1.1"
     walker "~1.0.5"
 
-sass-loader@^11.0.1:
-  version "11.1.1"
-  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-11.1.1.tgz#0db441bbbe197b2af96125bebb7f4be6476b13a7"
-  integrity sha512-fOCp/zLmj1V1WHDZbUbPgrZhA7HKXHEqkslzB+05U5K9SbSbcmH91C7QLW31AsXikxUMaxXRhhcqWZAxUMLDyA==
+sass-loader@^12.0.0:
+  version "12.1.0"
+  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-12.1.0.tgz#b73324622231009da6fba61ab76013256380d201"
+  integrity sha512-FVJZ9kxVRYNZTIe2xhw93n3xJNYZADr+q69/s98l9nTCrWASo+DR2Ot0s5xTKQDDEosUkatsGeHxcH4QBp5bSg==
   dependencies:
     klona "^2.0.4"
     neo-async "^2.6.2"