Set pretend version with timesamp before build for den (#178)

Author: mart-r

.github/workflows/medcat-den_main.yml

@@ -68,15 +68,15 @@ jobs:
         run: |
           pip install -e .
 
-      - name: Build package
-        run: |
-          python -m build
-
       - name: Set timestamp-based dev version
         run: |
           TS=$(date -u +"%Y%m%d%H%M%S")
           echo "SETUPTOOLS_SCM_PRETEND_VERSION_FOR_MEDCAT_DEN=0.2.2.dev${TS}" >> $GITHUB_ENV
 
+      - name: Build package
+        run: |
+          python -m build
+
       - name: Publish distribution to TestPyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with: