fix(fonts): specify versions for all font packages.

Author: ElijahKotyluk

packages/vue-cli-plugin-vuetify/generator/tools/fonts.js

@@ -10,23 +10,23 @@ const fonts = {
   },
   md: {
     package: {
-      'material-design-icons-iconfont': 'latest',
+      'material-design-icons-iconfont': '6.1.0',
     },
     import: 'material-design-icons-iconfont/dist/material-design-icons.css',
     link:
       '<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons">',
   },
   fa: {
     package: {
-      '@fortawesome/fontawesome-free': 'latest',
+      '@fortawesome/fontawesome-free': '5.15.3',
     },
     import: '@fortawesome/fontawesome-free/css/all.css',
     link:
       '<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.2/css/all.css" integrity="sha384-hWVjflwFxL6sNzntih27bfxkr27PmbbK/iSvJ+a4+0owXq79v+lsFkW54bOGbiDQ" crossorigin="anonymous">',
   },
   fa4: {
     package: {
-      'font-awesome': 'latest',
+      'font-awesome': '4.7.0',
     },
     import: 'font-awesome/css/font-awesome.css',
     link: