Bug#1144807: pybind11-dev: Regression introduced from 3.0.0 to 3.0.2

[Graham Inggs]

Control: severity -1 serious
Control: affects -1 + src:ecflow

This can be seen in the autopkgtest regression of ecflow [1] which
prevents its migration to testing.


[1] https://ci.debian.net/packages/e/ecflow/testing/amd64