Update NPM dependencies

Resolves #105

Updated:
- autoprefixer v10.4.2 → v10.4.4
- browser-sync v2.27.7 → v2.27.9
- esbuild v0.14.21 → v0.14.27
- postcss v8.4.6 → v8.4.12

package.json

@@ -21,14 +21,14 @@
         "svg4everybody": "^2.1.9"
     },
     "devDependencies": {
-        "autoprefixer": "^10.4.2",
-        "browser-sync": "^2.27.7",
+        "autoprefixer": "^10.4.4",
+        "browser-sync": "^2.27.9",
         "concat": "^1.0.3",
-        "esbuild": "^0.14.21",
+        "esbuild": "^0.14.27",
         "kleur": "^4.1.4",
         "node-notifier": "^10.0.1",
         "node-sass": "^7.0.1",
-        "postcss": "^8.4.6",
+        "postcss": "^8.4.12",
         "svg-mixer": "^2.3.14",
         "tiny-glob": "^0.2.9"
     }