Upgrade pip in publish workflow

Author: pllim

.github/workflows/publish.yml

@@ -20,8 +20,8 @@ jobs:
       with:
         python-version: 3.9
 
-    - name: Install python-build and twine
-      run: python -m pip install build "twine>=3.3"
+    - name: Install build dependencies
+      run: python -m pip install pip build "twine>=3.3" -U
 
     - name: Build package
       run: python -m build --sdist --wheel .