Update actions/setup-python action to v4

.github/workflows/pull-requests.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v4
       with:
         python-version: '3.10'
         
@@ -37,7 +37,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v4
 
     - name: Build PR release
       run: |