update pangocffi and pangocairocffi version

[naveen521kk]

Motivation

Update pangocffi and pangocairocffi version. It allows setting DLL files using environment variable and this will be super helpful for windows users, as well as chocolatey package.

Overview / Explanation for Changes

Update:
pangocffi - 0.9.0
pangocairocffi - 0.5.0

Oneline Summary of Changes

- Update Pangocffi and Pangocairocffi (:pr:`871`)

Acknowledgements

• I have read the Contributing Guidelines

Reviewer Checklist

• Newly added functions/classes are either private or have a docstring
• Newly added functions/classes have tests added and (optional) examples in the docs
• Newly added documentation builds, looks correctly formatted, and adds no additional build warnings
• The oneline summary has been included in the wiki

[behackl]

If this actually allows to circumvent DLL hell, this is golden. I just triggered the pipeline again, hoping that the tests for macos-latest and python 3.8, as well as python 3.9 were just transient errors.

(I don't really see a reason for a segmentation fault not occurring for macos-latest + py3.7, if there were a problem with the latest version of the packages.)

[naveen521kk]

Segmentation fault happens for all the CI runs of MacOS. Possibly something wrong with GitHub CI. Or someother things, no just this one.

If this actually allows to circumvent DLL hell, this is golden.

Partly helps, though not fully. It tries to load a DLL specified in variable, but deps of those DLL aren't bound to this fix though.

[leotrs]

Tests still not passing :(

[naveen521kk]

Closing in favour of #878