chore(deps): update dependency @testing-library/dom to v9 (#1356)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/redux-devtools-ui/package.json

@@ -71,7 +71,7 @@
     "@storybook/builder-webpack5": "^6.5.16",
     "@storybook/manager-webpack5": "^6.5.16",
     "@storybook/react": "^6.5.16",
-    "@testing-library/dom": "^8.20.0",
+    "@testing-library/dom": "^9.0.0",
     "@testing-library/react": "^13.4.0",
     "@testing-library/user-event": "^14.4.3",
     "@types/color": "^3.0.3",