chore: update storybook monorepo to v5.2.6

Author: renovate-bot

package.json

@@ -48,10 +48,10 @@
     "shallowequal": "^1.1.0"
   },
   "devDependencies": {
-    "@storybook/addon-actions": "5.1.11",
-    "@storybook/addon-knobs": "5.1.11",
-    "@storybook/addon-options": "5.1.11",
-    "@storybook/react": "5.1.11",
+    "@storybook/addon-actions": "5.2.6",
+    "@storybook/addon-knobs": "5.2.6",
+    "@storybook/addon-options": "5.2.6",
+    "@storybook/react": "5.2.6",
     "@types/expect-puppeteer": "3.3.2",
     "@types/jest-environment-puppeteer": "4.3.1",
     "@types/puppeteer": "1.20.2",