Update PyPI release workflow with build steps

.github/workflows/release.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - main
   workflow_dispatch:
+
 jobs:
   pypi-publish:
     name: pypi-publish
@@ -14,7 +15,22 @@ jobs:
       url: https://pypi.org/p/cmdbench
     permissions:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
+
     steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    - name: Install build dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+
+    - name: Build package
+      run: python -m build
 
     - name: Publish package distributions to PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
+      uses: pypa/gh-action-pypi-publish@release/v1