CELESTIA-APP v6.4.9-arabica - Arabica upgrade

Dear partners and node operators,

We are pleased to announce a new version of celestia-app today.
Please upgrade as soon as possible to benefit from the latest features.

Celestia-app: This release includes some bug fixes and improvements. It resolves an important issue with catching up to the tip of the chain and it is highly reccomended that all nodes upgrade as soon as possible on arabica.

Release notes:
https://github.com/celestiaorg/celestia-app/releases/tag/v6.4.9-arabica

Thank you,
Celestia Foundation
@Developer