Add test-time version to main workflow when pushing to test PyPI (#84)

Author: mart-r

.github/workflows/medcat-v1_main.yml

@@ -113,6 +113,7 @@ jobs:
 
       - name: Build a binary wheel and a source tarball
         run: >-
+          SETUPTOOLS_SCM_PRETEND_VERSION_FOR_MEDCAT="1.16.0dev0"
           python -m
           build
           --sdist