ci: clean dist directory before building

Author: mikewcasale

.github/workflows/publish.yml

@@ -23,8 +23,10 @@ jobs:
         python -m pip install --upgrade pip
         pip install build twine
     
-    - name: Build package
-      run: python -m build
+    - name: Clean and Build package
+      run: |
+        rm -rf dist/
+        python -m build
     
     - name: Publish to PyPI
       env: