Update `wps-light` to version 0.16+

[GirZ0n]

While processing the data for threshold analysis, we found that wemake-python-styleguide fails on some fragments. According to this issue, this bug will be fixed in wemake-python-styleguide 0.16 (and consequently in wps-ligth 0.16)

[nbirillo]

The bug was fixed, now we should to update its version in the tool