NCDNTS-653

[NRHelmi]

Bum up requests-toolbelt version to 1.0.0
Fix urllib3 and requests dependencies versions
Run tests using multiple python versions [3.7, 3.8, 3.9]

[larf311]

Generally I like running tests with multiple versions, however, these are more end to end tests than unit tests so I think this is overkill.

[torkins]

just a comment - this is blocking a hi-pri incident and Helmi is not in to address comments on the matrix usage so we will discuss and address later, merging now

[NRHelmi]

Generally I like running tests with multiple versions, however, these are more end to end tests than unit tests so I think this is overkill.

The matrix usage will only affect the python sdk repo, raicode and other repositories will use the default version from action.yaml file which is python 3.7. We do the same for julia and java sdks