Update Python version to 3.12 in workflows and environment files

Author: fleming79

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.12'
           architecture: 'x64'
       - uses: actions/download-artifact@v4
         with:

.gitpod.yml

@@ -23,7 +23,7 @@ tasks:
       micromamba activate
       EOT
       source /workspace/bin/activate-env.sh
-      micromamba install -n base -y python=3.11 nodejs=14 jupyterlab=4 yarn
+      micromamba install -n base -y python=3.12 nodejs=14 jupyterlab=4 yarn
       python -m pip install -e ".[dev,test]" && jlpm && jlpm run build && jupyter labextension develop . --overwrite
       gp sync-done setup
     command: |

docs/environment.yml

@@ -3,7 +3,7 @@ channels:
 - conda-forge
 dependencies:
 - python-build
-- python=3.11
+- python=3.12
 - pip
 - mamba
 - pydata-sphinx-theme