chore(python): upgrade as high as it works

There are some limitations. Docs have an open issue dask/dask-sphinx-theme#68 which locks us on python 3.11.

Chartpress (https://github.com/jupyterhub/chartpress) limits us from going above 3.12 on the helm builds.

Issue dask#850

.github/workflows/build-publish-docs.yaml

@@ -38,6 +38,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+          # ref https://github.com/dask/dask-sphinx-theme/issues/68
 
       - name: Install Python docs requirements
         run: |
@@ -64,7 +65,7 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
-
+          # ref https://github.com/dask/dask-sphinx-theme/issues/68
       - name: Install Python docs requirements
         run: |
           DASK_GATEWAY_SERVER__NO_PROXY=true pip install -r docs/requirements.txt

.github/workflows/build-publish-helm-chart.yaml

@@ -27,7 +27,9 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
+          # we need chartpress to have a release with https://github.com/jupyterhub/chartpress/commit/28836338679ffff951ea746371b5d18ceca552e0 before this can be 3.13
+
 
       - name: Install chart publishing dependencies (chartpress, pyyaml, helm)
         run: |

.github/workflows/build-publish-python-packages.yaml

@@ -69,7 +69,7 @@ jobs:
       - uses: actions/setup-go@v5
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.13"
 
       - name: Install build package
         run: |

.github/workflows/refreeze-dockerfile-requirements-txt.yaml

@@ -39,7 +39,7 @@ jobs:
               --volume=$PWD:/opt/${{ matrix.image }} \
               --workdir=/opt/${{ matrix.image }} \
               --user=root \
-              python:3.11-slim-bullseye \
+              python:3.13-slim-bullseye \
               sh -c 'pip install pip-tools==6.* && pip-compile --upgrade --output-file=Dockerfile.requirements.txt Dockerfile.requirements.in'
 
       - name: git diff

.github/workflows/test.yaml

@@ -56,9 +56,9 @@ jobs:
           #   we test integration with. We can test against only one version and
           #   that would be fine.
           #
-          - python-version: "3.10"
+          - python-version: "3.12"
             go-version: "1.20"
-          - python-version: "3.11"
+          - python-version: "3.13"
             go-version: "1.20"
           - python-version: "3.12"
             go-version: "1.21"
@@ -166,7 +166,8 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
+          # we need chartpress to have a release with https://github.com/jupyterhub/chartpress/commit/28836338679ffff951ea746371b5d18ceca552e0 before this can be 3.13
 
       # Starts a k8s cluster with NetworkPolicy enforcement and installs both
       # kubectl and helm

dev-environment.yaml

@@ -19,7 +19,7 @@ name: dask-gateway-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.11
+  - python=3.13
   - pip
 
   # Golang with compiler is required to compile dask-gateway-server's bundled