build(deps): bump next from 15.2.4 to 15.4.7 in /chat (#71)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: 35C4n0r <[email protected]>

Author: dependabot[bot]