update to beta.13

Author: MarcusNotheis

package.json

@@ -20,14 +20,14 @@
     "lerna:version-dryrun": "lerna version --conventional-graduate --no-git-tag-version --no-push"
   },
   "dependencies": {
-    "@storybook/addon-actions": "6.0.0-beta.12",
-    "@storybook/addon-docs": "6.0.0-beta.12",
-    "@storybook/addon-knobs": "6.0.0-beta.12",
-    "@storybook/addon-toolbars": "6.0.0-beta.12",
-    "@storybook/addons": "6.0.0-beta.12",
-    "@storybook/cli": "6.0.0-beta.12",
-    "@storybook/react": "6.0.0-beta.12",
-    "@storybook/theming": "6.0.0-beta.12",
+    "@storybook/addon-actions": "6.0.0-beta.13",
+    "@storybook/addon-docs": "6.0.0-beta.13",
+    "@storybook/addon-knobs": "6.0.0-beta.13",
+    "@storybook/addon-toolbars": "6.0.0-beta.13",
+    "@storybook/addons": "6.0.0-beta.13",
+    "@storybook/cli": "6.0.0-beta.13",
+    "@storybook/react": "6.0.0-beta.13",
+    "@storybook/theming": "6.0.0-beta.13",
     "@ui5/webcomponents": "1.0.0-rc.7",
     "@ui5/webcomponents-fiori": "1.0.0-rc.7",
     "@ui5/webcomponents-icons": "1.0.0-rc.7"