Enhance TestPyPI upload workflow with build steps

Author: HKaras

.github/workflows/TestPyPI_Upload.yml

@@ -20,6 +20,19 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: "3.x"
+    - name: Install pypa/build
+      run: >-
+        python3 -m
+        pip install
+        build
+        --user
+    - name: Build a binary wheel and a source tarball
+      run: python3 -m build
+    - name: Store the distribution packages
+      uses: actions/upload-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
 
   publish-to-testpypi:
     name: Publish Python 🐍 distribution 📦 to TestPyPI