Update needed: polkadot_omni_node (0.7.0 -> 0.11.0)

A new release has been detected for polkadot_omni_node.

**Category:** crates
**Current version:** 0.7.0
**Latest version:** 0.11.0

Please review the [changelog](https://crates.io/crates/polkadot-omni-node/0.11.0) and update the documentation accordingly.
