Upgrade dependencies

package.json

@@ -32,7 +32,7 @@
     "amplitudejs": "5.3.1"
   },
   "devDependencies": {
-    "autoprefixer": "10.2.5",
+    "autoprefixer": "10.2.6",
     "browser-sync": "2.26.14",
     "csso-cli": "3.0.0",
     "glob": "7.1.7",
@@ -41,11 +41,11 @@
     "node-file-rev": "1.1.3",
     "npm-run-all": "4.1.5",
     "onchange": "7.1.0",
-    "postcss": "8.2.14",
+    "postcss": "8.3.0",
     "postcss-calc": "8.0.0",
     "postcss-cli": "8.3.1",
     "postcss-custom-media": "8.0.0",
-    "postcss-import": "14.0.1",
+    "postcss-import": "14.0.2",
     "postcss-media-variables": "2.0.1",
     "postcss-nesting": "8.0.1",
     "pug": "3.0.2",