infra: bump @patternfly/react-core from 4.264.0 to 6.0.0 in /ui/webui

Bumps [@patternfly/react-core](https://github.com/patternfly/patternfly-react) from 4.264.0 to 6.0.0.
- [Release notes](https://github.com/patternfly/patternfly-react/releases)
- [Commits](https://github.com/patternfly/patternfly-react/compare/@patternfly/[email protected]...@patternfly/[email protected])

---
updated-dependencies:
- dependency-name: "@patternfly/react-core"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

ui/webui/package.json

@@ -50,7 +50,7 @@
   },
   "dependencies": {
     "@patternfly/patternfly": "4.219.2",
-    "@patternfly/react-core": "4.264.0",
+    "@patternfly/react-core": "6.0.0",
     "@patternfly/react-log-viewer": "^4.51.2",
     "@patternfly/react-table": "^4.75.2",
     "react": "17.0.2",