Add testing for SMW 3.2

[kghbln]

This PR is made in reference to: #

This PR addresses or contains:

• Add testing for SMW 3.2

This PR includes:

• [ ] Tests (unit/integration)
• [ ] CI build passed

Fixes #

[kghbln]

@mwjames I suspect that PHPUNIT must be set to 8.5.* since master does not fail for SMW 3.2

[kghbln]

Paradise regained. Thanks at @mwjames for helping my in my senior moments.