chore: Upgrade Tailwind from v2 to v3

web/app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "gatus",
-  "version": "3.3.3",
+  "version": "3.4.0",
   "private": true,
   "scripts": {
     "serve": "vue-cli-service serve --mode development",
@@ -18,12 +18,12 @@
     "@vue/cli-plugin-router": "5.0.0-beta.6",
     "@vue/cli-service": "5.0.0-beta.6",
     "@vue/compiler-sfc": "3.2.21",
-    "autoprefixer": "10.4.0",
+    "autoprefixer": "^10.4.1",
     "babel-eslint": "^10.1.0",
     "eslint": "^7.32.0",
     "eslint-plugin-vue": "^7.17.0",
-    "postcss": "^8.3.6",
-    "tailwindcss": "^2.2.19"
+    "postcss": "^8.4.5",
+    "tailwindcss": "^3.0.8"
   },
   "eslintConfig": {
     "root": true,