set ci python version explicitly to 3.9

.github/workflows/pythonpackage.yml

@@ -29,10 +29,10 @@ jobs:
         python-version: ["3.9", "3.11"]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -77,10 +77,10 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
-          python-version: '3.x'
+          python-version: '3.9'
       - name: Check distribution valid and test publish
         run: |
           pip install wheel twine
@@ -103,10 +103,10 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
-          python-version: '3.x'
+          python-version: '3.9'
       - name: Bump version using self app
         id: app_version_bump
         run: |
@@ -163,10 +163,10 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
         with:
-          python-version: '3.x'
+          python-version: '3.9'
       # currently there is no way of passing data between jobs except using artifact,
       # this might be an option, but just do another bump for now,
       # and anyway setup.py file will need to have some change since we checked out again