chore: update storybook deps (#4361)

Updates Storybook dependencies to patch security vulnerabilities

Author: pfulton

.storybook/package.json

@@ -48,22 +48,22 @@
 		"@babel/core": "7.28.5",
 		"@chromatic-com/storybook": "3.2.7",
 		"@etchteam/storybook-addon-status": "5.0.0",
-		"@storybook/addon-a11y": "8.4.7",
-		"@storybook/addon-actions": "8.4.7",
+		"@storybook/addon-a11y": "8.6.15",
+		"@storybook/addon-actions": "8.6.15",
 		"@storybook/addon-designs": "8.2.1",
-		"@storybook/addon-docs": "8.4.7",
-		"@storybook/addon-essentials": "8.4.7",
-		"@storybook/addon-interactions": "8.4.7",
-		"@storybook/blocks": "8.4.7",
-		"@storybook/builder-vite": "8.4.7",
-		"@storybook/components": "8.4.7",
-		"@storybook/core-events": "8.4.7",
-		"@storybook/manager-api": "8.4.7",
-		"@storybook/preview-api": "8.4.7",
-		"@storybook/theming": "8.4.7",
-		"@storybook/web-components-vite": "8.4.7",
+		"@storybook/addon-docs": "8.6.15",
+		"@storybook/addon-essentials": "8.6.15",
+		"@storybook/addon-interactions": "8.6.15",
+		"@storybook/blocks": "8.6.15",
+		"@storybook/builder-vite": "8.6.15",
+		"@storybook/components": "8.6.15",
+		"@storybook/core-events": "8.6.15",
+		"@storybook/manager-api": "8.6.15",
+		"@storybook/preview-api": "8.6.15",
+		"@storybook/theming": "8.6.15",
+		"@storybook/web-components-vite": "8.6.15",
 		"@whitespace/storybook-addon-html": "8.0.2",
-		"chromatic": "13.3.3",
+		"chromatic": "13.3.4",
 		"lit": "3.3.1",
 		"lodash-es": "4.17.21",
 		"npm-registry-fetch": "19.1.0",
@@ -73,7 +73,7 @@
 		"react-dom": "19.2.0",
 		"react-syntax-highlighter": "15.6.6",
 		"remark-gfm": "4.0.1",
-		"storybook": "8.6.14",
+		"storybook": "8.6.15",
 		"vite": "7.2.2"
 	},
 	"keywords": [