Update actions/setup-python action to v5

Author: renovate[bot]

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
           fetch-depth: 0 # fetch all history
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -78,7 +78,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: 3.8