Update devDependencies (#32355)

* eslint      ^7.14.0  →  ^7.15.0
* linkinator   ^2.5.1  →   ^2.8.0
* postcss     ^8.1.10  →  ^8.1.14
* rollup      ^2.34.0  →  ^2.34.2
* sass        ^1.29.0  →  ^1.30.0

package.json

@@ -110,7 +110,7 @@
     "bundlewatch": "^0.3.1",
     "clean-css-cli": "^4.3.0",
     "cross-env": "^7.0.3",
-    "eslint": "^7.14.0",
+    "eslint": "^7.15.0",
     "eslint-config-xo": "^0.33.1",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-unicorn": "^23.0.0",
@@ -129,16 +129,16 @@
     "karma-jasmine": "^4.0.1",
     "karma-jasmine-html-reporter": "^1.5.4",
     "karma-rollup-preprocessor": "^7.0.5",
-    "linkinator": "^2.5.1",
+    "linkinator": "^2.8.0",
     "lockfile-lint": "^4.3.7",
     "nodemon": "^2.0.6",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.1.10",
+    "postcss": "^8.1.14",
     "postcss-cli": "^8.3.0",
-    "rollup": "^2.34.0",
+    "rollup": "^2.34.2",
     "rollup-plugin-istanbul": "^2.0.1",
     "rtlcss": "^2.6.2",
-    "sass": "^1.29.0",
+    "sass": "^1.30.0",
     "shelljs": "^0.8.4",
     "stylelint": "^13.8.0",
     "stylelint-config-twbs-bootstrap": "^2.1.0",