Update unstable CI to use no build isolation

.github/workflows/ci.yaml

@@ -13,7 +13,7 @@ jobs:
         python-version: ["3.9", "3.11", "3.12"]
         experimental: [false]
         include:
-          - python-version: "3.11"
+          - python-version: "3.12"
             os: "ubuntu-latest"
             experimental: true
 
@@ -50,13 +50,14 @@ jobs:
           numpy \
           pandas; \
           python -m pip install \
-          --no-deps --upgrade \
+          --no-deps --upgrade --pre --no-build-isolation \
           git+https://github.com/dask/dask \
           git+https://github.com/dask/distributed \
           git+https://github.com/Unidata/cftime \
           git+https://github.com/mapbox/rasterio \
           git+https://github.com/pydata/bottleneck \
           git+https://github.com/pydata/xarray;
+          python -m pip install -e . --no-deps --no-build-isolation;
 
       - name: Install trollimage
         shell: bash -l {0}