Bump @storybook/addon-a11y from 6.5.9 to 7.6.17

Bumps [@storybook/addon-a11y](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/a11y) from 6.5.9 to 7.6.17.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v7.6.17/code/addons/a11y)

---
updated-dependencies:
- dependency-name: "@storybook/addon-a11y"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -47,7 +47,7 @@
   "proxy": "http://localhost:3000",
   "devDependencies": {
     "@4tw/cypress-drag-drop": "^2.2.3",
-    "@storybook/addon-a11y": "^6.5.9",
+    "@storybook/addon-a11y": "^7.6.17",
     "@storybook/addon-actions": "^6.5.9",
     "@storybook/addon-essentials": "^7.0.9",
     "@storybook/addon-links": "^6.5.9",