Update remaining Python 3.9 references to 3.12 (#52)

- Dask image: ghcr.io/dask/dask:2022.8.1-py3.9 -> 2026.1.2-py3.12.
- Prefect default image in defaults.py: update to 3.6.17-py3.12-icl0.0.4.
- Integration test: update conda environment name from python-3.9 to
  python-3.12.

Co-authored-by: Areg Melik-Adamyan <areg@sphynx.local>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 3 people

src/infractl/defaults.py

@@ -1,3 +1,3 @@
 """ICL defaults."""
 
-PREFECT_IMAGE = 'pbchekin/icl-prefect:2.20.16-py3.9-icl0.0.4'
+PREFECT_IMAGE = 'pbchekin/icl-prefect:3.6.17-py3.12-icl0.0.4'

terraform/modules/dask/dask-cluster.yaml

@@ -22,7 +22,7 @@ spec:
                 topologyKey: kubernetes.io/hostname
       containers:
         - name: worker
-          image: "ghcr.io/dask/dask:2022.8.1-py3.9"
+          image: "ghcr.io/dask/dask:2026.1.2-py3.12"
           imagePullPolicy: "IfNotPresent"
           args:
             - dask-worker
@@ -32,7 +32,7 @@ spec:
     spec: # PodSpec, standard k8s pod - https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#podspec-v1-core
       containers:
         - name: scheduler
-          image: "ghcr.io/dask/dask:2022.8.1-py3.9"
+          image: "ghcr.io/dask/dask:2026.1.2-py3.12"
           imagePullPolicy: "IfNotPresent"
           args:
             - dask-scheduler

tests/integration/test_jupyterhub.py

@@ -17,7 +17,7 @@ def test_jupyterhub_notebook(jupyterhub_namespace, jupyterhub_session_pod_name):
         "/tmp/test_notebook.ipynb",
     )
 
-    # In order to execute NB inside the python-3.9 conda environment, we install nbconvert to this "user" environment.
+    # In order to execute NB inside the python-3.12 conda environment, we install nbconvert to this "user" environment.
     # There is a better way to do this.
     exec_in_pod(
         core_v1,
@@ -26,8 +26,8 @@ def test_jupyterhub_notebook(jupyterhub_namespace, jupyterhub_session_pod_name):
         [
             "/bin/bash",
             "-c",
-            "{ ~/.conda/bin/conda install -n python-3.9 -y nbconvert && \
-         ~/.conda/bin/conda run -n python-3.9 \
+            "{ ~/.conda/bin/conda install -n python-3.12 -y nbconvert && \
+         ~/.conda/bin/conda run -n python-3.12 \
             jupyter nbconvert /tmp/test_notebook.ipynb --execute --to notebook; } > /tmp/nbconvert.log 2>&1",
         ],
     )