Modernize the Python package build step

Modernize the build process by using the build package instead of the
now deprecated setup.py install method. Remove installing the package
requirements as it is unnecessary for this build process. Upgrade the
setuptools package as part of the initial dependency installation.

.github/workflows/build.yml

@@ -224,12 +224,12 @@ jobs:
             ${{ hashFiles('setup.py') }}"
           restore-keys: |
             ${{ env.BASE_CACHE_KEY }}
-      - name: Install dependencies
+      - name: Install build dependencies
         run: |
-          python -m pip install --upgrade pip wheel
-          pip install --upgrade --requirement requirements.txt
+          python -m pip install --upgrade pip setuptools wheel
+          python -m pip install --upgrade build
       - name: Build artifacts
-        run: python3 setup.py sdist bdist_wheel
+        run: python -m build
       - name: Upload artifacts
         uses: actions/upload-artifact@v2
         with: