Fix invalide use of encode on bytes object

[gschwind]

Overview

Invalide use of encode on bytes object

Within the pywps.inout.inputs.ComplexInput the json convertion function use encode where decode should be used. The patch fix this issue.

Related Issue / Discussion

Additional Information

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(as per https://github.com/geopython/pywps/blob/master/CONTRIBUTING.rst#contributions-and-licensing)

• [x] I'd like to contribute [feature X|bugfix Y|docs|something else] to PyWPS. I confirm that my contributions to PyWPS will be compatible with the PyWPS license guidelines at the time of contribution.
• [x] I have already previously agreed to the PyWPS Contributions and Licensing Guidelines

[cehbrecht]

@gschwind Thanks for the patch. Would you like to merge to the main branch?

[gschwind]

Hello,

I rebased the patch over the main here b5d9dc34ecbacade7212b2d53f50f0f9b2bc74d8 . I do not know how do you want to proceed.

[cehbrecht]

@gschwind I would prefer to merge it to the main branch ... so we don't need to make a 4.4.x release anymore. If this is ok for you and we cannot change the base branch in this PR anymore, then you could open a new PR with a reference to this one.

[gschwind]

I did the following PR #651 with main as base