chore: revert to webpack4

Signed-off-by: blam <ben@blam.sh>

packages/storybook/.storybook/main.js

@@ -2,9 +2,6 @@ const path = require('path');
 const WebpackPluginFailBuildOnWarning = require('./webpack-plugin-fail-build-on-warning');
 
 module.exports = {
-  core: {
-    builder: 'webpack5',
-  },
   stories: [
     '../../core-components/src/**/*.stories.tsx',
     '../../../plugins/**/src/**/*.stories.tsx',

packages/storybook/package.json

@@ -7,26 +7,24 @@
     "start": "start-storybook -p 6006",
     "build-storybook": "build-storybook --output-dir dist"
   },
-  "dependencies": {
-    "@backstage/theme": "^0.2.0",
-    "react": "^16.12.0",
-    "react-dom": "^16.12.0"
-  },
   "workspaces": {
     "nohoist": [
       "@storybook/react/**",
       "@storybook/addons/**"
     ]
   },
+  "dependencies": {
+    "@backstage/theme": "^0.2.0",
+    "react": "^16.12.0",
+    "react-dom": "^16.12.0"
+  },
   "devDependencies": {
-    "@storybook/addon-a11y": "^6.4.0-alpha.23",
-    "@storybook/addon-actions": "^6.4.0-alpha.23",
-    "@storybook/addon-links": "^6.4.0-alpha.23",
-    "@storybook/addon-storysource": "^6.4.0-alpha.23",
-    "@storybook/addons": "^6.4.0-alpha.23",
-    "@storybook/builder-webpack5": "^6.4.0-alpha.23",
-    "@storybook/manager-webpack5": "^6.4.0-alpha.23",
-    "@storybook/react": "^6.4.0-alpha.23",
-    "storybook-dark-mode": "^1.0.9-canary.158.3571.0"
+    "@storybook/addon-a11y": "^6.3.4",
+    "@storybook/addon-actions": "^6.1.11",
+    "@storybook/addon-links": "^6.1.11",
+    "@storybook/addon-storysource": "^6.1.11",
+    "@storybook/addons": "^6.1.11",
+    "@storybook/react": "^6.1.11",
+    "storybook-dark-mode": "^1.0.3"
   }
 }