Bump @patternfly/react-charts from 6.94.11 to 7.2.1 in /webapp

Bumps [@patternfly/react-charts](https://github.com/patternfly/patternfly-react) from 6.94.11 to 7.2.1.
- [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-charts"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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