[PRA-264] Fix TIOBE workflow (#212)

* ci: Exclude unit test requiring skopeo from tiobe workflow

* ci: Streamline tiobe workflow

Author: Batalex

.github/workflows/tiobe_scan.yaml

@@ -1,7 +1,6 @@
 # Copyright 2025 Canonical Ltd.
 # See LICENSE file for licensing details.
 
-
 name: TICS run self-hosted test (github-action)
 
 on:
@@ -23,15 +22,9 @@ jobs:
 
       - name: Install system dependencies
         run: |
-          sudo apt-get update 
-          sudo apt-get install -y python3-venv
-          sudo apt-get install -y libpq-dev python3-dev
-
-      - name: Install pipx
-        run: python3 -m pip install --user pipx && python3 -m pipx ensurepath
-
-      - name: Add pipx to PATH
-        run: echo "${HOME}/.local/bin" >> "${GITHUB_PATH}"
+          sudo apt update
+          sudo apt install -y libpq-dev pipx python3-dev python3-venv
+          pipx ensurepath
 
       - name: Install tox and poetry using pipx
         run: |
@@ -47,7 +40,7 @@ jobs:
           echo PATH="$PATH" >> "$GITHUB_ENV"
 
       - name: Run tox tests to create coverage.xml
-        run: tox run -e unit
+        run: tox run -e unit -- -m "not skopeo"
 
       - name: Move results to necessary folder for TICS
         run: |
@@ -62,4 +55,4 @@ jobs:
           branchdir: .
           viewerUrl: https://canonical.tiobe.com/tiobeweb/TICS/api/cfg?name=default
           ticsAuthToken: ${{ secrets.TICSAUTHTOKEN }}
-          installTics: true
+          installTics: true

tests/unit/test_components_refresh.py

@@ -19,7 +19,7 @@ def inspect_image(skopeo: str, image: str) -> dict:
     return json.loads(out)
 
 
-@pytest.mark.slow
+@pytest.mark.skopeo
 def test_images_same_spark_version(skopeo: str) -> None:
     # Given
     charm_workload_image = METADATA["resources"]["kyuubi-image"]["upstream-source"]