chore(deps): update dependency @testing-library/jest-dom to v6

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

plugins/bazaar/package.json

@@ -43,7 +43,7 @@
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.61",
     "@material-ui/pickers": "^3.3.10",
-    "@testing-library/jest-dom": "^5.10.1",
+    "@testing-library/jest-dom": "^6.0.0",
     "@types/react": "^16.13.1 || ^17.0.0",
     "luxon": "^3.0.0",
     "material-ui-search-bar": "^1.0.0",
@@ -58,7 +58,7 @@
   "devDependencies": {
     "@backstage/cli": "workspace:^",
     "@backstage/dev-utils": "workspace:^",
-    "@testing-library/jest-dom": "^5.10.1"
+    "@testing-library/jest-dom": "^6.0.0"
   },
   "files": [
     "dist"