chore(deps): bump celestiaorg/celestia-app from 1.4.0 to v1.6.0

Bumps [celestiaorg/celestia-app](https://github.com/celestiaorg/celestia-app) from 1.4.0 to v1.6.0.
- [Release notes](https://github.com/celestiaorg/celestia-app/releases)
- [Changelog](https://github.com/celestiaorg/celestia-app/blob/main/.goreleaser.yaml)
- [Commits](celestiaorg/celestia-app@v1.4.0...v1.6.0)

---
updated-dependencies:
- dependency-name: celestiaorg/celestia-app
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM ghcr.io/celestiaorg/celestia-app:v1.4.0 AS celestia-app
+FROM ghcr.io/celestiaorg/celestia-app:v1.6.0 AS celestia-app
 
 FROM ghcr.io/rollkit/celestia-da:v0.12.1-rc1