Write test.ttl into temp dir(s)

[yarikoptic]

ATM produces (and was committed, to be fixed by #321 ) file in the tree

❯ git grep '\<test.ttl'
.gitignore:test.ttl
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/core/tests/test_provone.py:    with open("test.ttl", 'w') as f:
nidm/experiment/tests/test_experiment.py:    with open("test.ttl",'w') as f:
nidm/experiment/tests/test_experiment_basic.py:    with open("test.ttl",'w') as f:
nidm/experiment/tests/test_experiment_basic.py:    with open("test.ttl",'w') as f:
nidm/experiment/tests/test_query.py:    #WIP test = Query.GetProjectMetadata(["test.ttl", "test2.ttl"])
nidm/experiment/tools/csv2nidm.py:        #with open("/Users/dbkeator/Downloads/test.ttl","w") as f:
nidm/workflows/tests/test_workflows.py:#     with open("test.ttl",'w') as f:
nidm/workflows/tests/test_workflows.py:#     with open("test.ttl", 'w') as f:

[github-actions]

🚀 Issue was released in v4.0.0 🚀