Update test dependency to stable spec (#84)

# Description
<!-- Provide a brief description of this PR -->

# Issues
<!-- If this is related to or closes an issue/other PR, please note them
here -->

# Other Notes
<!-- Note any breaking changes, WIP changes, requests for input, etc.
here -->

Co-authored-by: Daniel McKnight <daniel@neon.ai>

requirements/test.txt

@@ -1 +1 @@
-neon-minerva~=0.1,>=0.1.1a5
+neon-minerva~=0.2