build(deps): bump @mui/material from 5.16.14 to 7.2.0 in /dapp-example (#4033)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]