Update @patternfly/patternfly dependency

[dlabrecq]

Now that PR patternfly/patternfly#7337 has been merged, the @patternfly/patternfly 6.2.0-prerelease.4 version has been created. We need these changes to be reflected in react-tokens, to unblock work on the ECharts theme.

[thatblindgeye]

Closed by #11525