more precise python version to ensure updated GLIB library

Author: rcpeene

.github/workflows/build.yml

@@ -26,9 +26,9 @@ jobs:
           ref: ${{ github.ref }}
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.9"
+          python-version: '3.9.13'
 
       # - name: Upgrading pip
       #   run: pip install --upgrade pip

.github/workflows/test.yml

@@ -21,12 +21,14 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.9.13'
+
       # - name: Upgrading pip
       #   run: pip install --upgrade pip
 
-      - name: Install cython
-        run: pip install cython numpy==1.26
-
       - name: Installing requirements
         run: pip install -r ./requirements.txt