downgrade to python 3.11 due to some conflicts

.github/workflows/ci.yml

@@ -16,10 +16,10 @@ jobs:
 
  steps:
  - uses: actions/checkout@v2
- - name: Set up Python 3.12
+ - name: Set up Python 3.11
  uses: actions/setup-python@v2
  with:
- python-version: 3.12
+ python-version: 3.11
  - uses: pre-commit/[email protected]
 
  build:
@@ -35,7 +35,7 @@ jobs:
  use-mamba: true
  channels: conda-forge, defaults
  environment-file: environment.yml
- python-version: "3.12"
+ python-version: "3.11"
  auto-activate-base: true
  activate-environment: true
  - name: "Build HTML docs"