whitelist libgphoto2 in kb-h050 hook

[sparik]

see this conan-io/conan-center-index#7664 (comment)

[ericLemanissier]

This CI error is caused by an outdated tox environment. Does someone have the possibility to remove all these outdated environments ?

[madebr]

This CI error is caused by an outdated tox environment. Does someone have the possibility to remove all these outdated environments ?

@uilianries fixed CI in his pr at #280
Perhaps he/we need to extract the fix to its own pr, and commit that?

[ericLemanissier]

I don't know what you are talking about. What I see in the current CI log is ERROR: Install yamllint to use 'yaml_linter' hook: 'pip install yamllint' which is wrong because yamllint should have been installed as part of https://github.com/conan-io/hooks/blob/master/tests/requirements_test.txt#L8
It was not installed, because tox reused an existing environment. CF #358 (comment)

The gist is that we are bitten by tox-dev/tox#149 which will be solved in tox 4

[uilianries]

@ericLemanissier @madebr Thank you for alerting! I've opened #366 I'll try a fresh install for every new CI build.

[sparik]

I guess this can be merged now, right? @uilianries