Pin python version.

Author: pp-mo

.github/workflows/ci-tests.yml

@@ -48,7 +48,7 @@ jobs:
 
       - name: "Install dependencies"
         run: |
-          conda install --yes numpy pytest pytest-mock iris xarray filelock requests zarr aiohttp fsspec
+          conda create --yes python=3.13 numpy pytest pytest-mock iris xarray filelock requests zarr aiohttp fsspec
 
       - name: "Install *latest* Iris"
         run: |

requirements/readthedocs.yml

@@ -12,7 +12,7 @@ dependencies:
   - pip
   - pydata-sphinx-theme
   - pytest
-  - python<3.13
+  - python<3.14
   - sphinx
   - sphinxcontrib-napoleon
   - sphinx-copybutton