sr_ronex: 0.9.9-2 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `sr_ronex` to `0.9.9-2`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.7`
- previous version for package: `0.9.6-0`

## sr_ronex

- No changes

## sr_ronex_controllers

- No changes

## sr_ronex_drivers

- No changes

## sr_ronex_examples

- No changes

## sr_ronex_external_protocol

- No changes

## sr_ronex_hardware_interface

- No changes

## sr_ronex_launch

- No changes

## sr_ronex_msgs

- No changes

## sr_ronex_test

- No changes

## sr_ronex_transmissions

- No changes

## sr_ronex_utilities

- No changes