Improve TaurusLabelTest2 to support various pint versions
pint v0.8 fixed a bug which had, as side efect a change in str conversion which breaks TaurusLabelTest2. Adapt the expected value of a test to handle different pint versions.
pint v0.8 fixed a bug which had, as side efect a change in str conversion which breaks TaurusLabelTest2. Adapt the expected value of a test to handle different pint versions.