Update dependency @testing-library/dom to v8.20.0

Author: renovate[bot]

packages/strum-react/package.json

@@ -71,7 +71,7 @@
     "@babel/preset-typescript": "7.18.6",
     "@strum/eslint-config": "*",
     "@strum/tsconfig": "*",
-    "@testing-library/dom": "8.19.0",
+    "@testing-library/dom": "8.20.0",
     "@testing-library/jest-dom": "5.16.5",
     "@testing-library/react": "13.4.0",
     "@testing-library/react-hooks": "8.0.1",