Bug#945128: nlopt: needs an explicit build dependency on dh-python

[Matthias Klose]

Package: src:nlopt
Version: 2.6.1-6
Severity: serious
Tags: sid bullseye

python3-all and python3-dev now dropped the dependency on
dh-python:

[ Piotr Ożarowski ]
   * Remove dh-python dependency from python3-all and python3-dev packages.
     Packages should build depend on dh-python or dh-sequence-python3 instead.

Please add an explicit build dependency on dh-python.