changing CI building to use build

.github/workflows/main.yml

@@ -222,11 +222,11 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install --upgrade wheel setuptools setuptools_scm[toml]>=6 tox
+        pip install --upgrade wheel build tox
 
     - name: Build package
       run: |
-        python setup.py sdist bdist_wheel
+        python -m build
 
     - name: Publish package to PyPI
       uses: pypa/gh-action-pypi-publish@master