Update dependency @testing-library/dom to v8.20.0 (#61677)

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

* do some lockfile surgery

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

package.json

@@ -115,7 +115,7 @@
     "@rtsao/plugin-proposal-class-properties": "7.0.1-patch.1",
     "@swc/core": "1.3.11",
     "@swc/helpers": "0.4.12",
-    "@testing-library/dom": "8.19.0",
+    "@testing-library/dom": "8.20.0",
     "@testing-library/jest-dom": "5.16.5",
     "@testing-library/react": "12.1.4",
     "@testing-library/react-hooks": "8.0.1",