update to latest storybook rc

Author: hipstersmoothie

plugins/storybook/package.json

@@ -27,17 +27,17 @@
     "@design-systems/cli-utils": "link:../../packages/cli-utils",
     "@design-systems/plugin": "link:../../packages/plugin",
     "@proof-ui/storybook": "^0.0.19",
-    "@storybook/addon-a11y": "6.0.0-beta.30",
-    "@storybook/addon-actions": "6.0.0-beta.30",
-    "@storybook/addon-backgrounds": "6.0.0-beta.30",
+    "@storybook/addon-a11y": "6.0.0-rc.14",
+    "@storybook/addon-actions": "6.0.0-rc.14",
+    "@storybook/addon-backgrounds": "6.0.0-rc.14",
     "@storybook/addon-centered": "6.0.0-alpha.30",
-    "@storybook/addon-knobs": "6.0.0-beta.30",
+    "@storybook/addon-knobs": "6.0.0-rc.14",
     "@storybook/addon-notes": "6.0.0-alpha.1",
-    "@storybook/addon-viewport": "6.0.0-beta.30",
-    "@storybook/addons": "6.0.0-beta.30",
-    "@storybook/components": "6.0.0-beta.30",
-    "@storybook/react": "6.0.0-beta.30",
-    "@storybook/theming": "6.0.0-beta.30",
+    "@storybook/addon-viewport": "6.0.0-rc.14",
+    "@storybook/addons": "6.0.0-rc.14",
+    "@storybook/components": "6.0.0-rc.14",
+    "@storybook/react": "6.0.0-rc.14",
+    "@storybook/theming": "6.0.0-rc.14",
     "babel-loader": "8.1.0",
     "core-js": "3.6.5",
     "dedent": "0.7.0",