adjust pipelines, to use python 3.9 instead of python 3.8

Author: marceljk

.github/workflows/cd.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"          
+          python-version: "3.9"
       - name: Push tag for each updated package
         env:
           GH_TOKEN: ${{ secrets.RENOVATE_TOKEN }}

.github/workflows/dependency-checker.yaml

@@ -18,7 +18,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: "3.9"
       - name: Poetry Python dependeny updater
         env:
           GH_TOKEN: ${{ secrets.RENOVATE_TOKEN }}