ci: ensure pylint and flake8 are installed in the TiCS workflow.

Signed-off-by: Nashwan Azhari <[email protected]>

.github/workflows/tiobe-tics-cron.yaml

@@ -39,8 +39,19 @@ jobs:
         run: |
           set -eux -o pipefail
 
+          # Upgrade pip to be able to read the requirements.txt
+          sudo python3 -m pip install --upgrade pip
+
+          # tox required for running the unit tests with coverage:
           sudo python3 -m pip install tox
 
+          # Required by TICSQServer:
+          sudo python3 -m pip install pylint flake8
+
+          # Must pre-install dependencies for TICSQServer:
+          sudo python3 -m pip install -r $GITHUB_WORKSPACE/charms/worker/k8s/requirements.txt
+          sudo python3 -m pip install -r $GITHUB_WORKSPACE/test_requirements.txt
+
       - name: Install Go for Cobertura Coverage Converter
         uses: actions/setup-go@v5
         with: