pr2_ethercat_drivers: 1.8.11-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `pr2_ethercat_drivers` to `1.8.11-0`:

- upstream repository: https://github.com/PR2/pr2_ethercat_drivers.git
- release repository: https://github.com/ros-gbp/pr2_ethercat_drivers-release.git
- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.12`
- previous version for package: `1.8.8-1`

## ethercat_hardware

- No changes

## fingertip_pressure

- No changes

## pr2_ethercat_drivers

- No changes