Use v4 of setup-python

Author: ali-ince

.github/workflows/build.yaml

@@ -11,8 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - name: set up python ${{ matrix.python-version }}
-        uses: actions/setup-python@v3
+      - name: set up python
+        uses: actions/setup-python@v4
         with:
           python-version: |
             3.9