Update testing dependencies: celestia-app v8.0.1-mocha and celestia-node v0.30.2-mocha

[tac0turtle]

Upgrades needed

Update testing configuration to use newer versions:

• Upgrade celestia-app to v8.0.1-mocha
• Upgrade celestia-node to v0.30.2-mocha

Please update the test environment and configuration to support these new versions.