Bump flask-rest-jsonapi from 0.30.1 to 0.31.2

Bumps flask-rest-jsonapi from 0.30.1 to 0.31.2.

Commits

• 2eaf5a2 Bump version to 0.31.2
• 9d77bfb update marshmallow and marshmallow_jsonapi version
• f937588 Bump version to 0.31.1
• 11bcdfd add compatibility with marshallow 3.8
• 3ce7482 Bump version to 0.31.0
• be79f13 Merge branch 'master' of github.com:miLibris/flask-rest-jsonapi
• a900250 use main python versions
• bfe9a3d fix marshaling error
• d8772e1 Merge pull request #190 from rubenghio/master
• c106169 Merge pull request #181 from TMiguelT/resource_init_args
• Additional commits viewable in compare view