Conda actions are failing

[RemDelaporteMathurin]

A couple of days ago the Conda actions started failing:

• https://github.com/festim-dev/FESTIM/actions/runs/25304024242
• https://github.com/RemDelaporteMathurin/FESTIM/actions/runs/25320811528

Not sure what happens under the hood but this needs fixing

[RemDelaporteMathurin]

Explicitly adding pip in the conda install and using python -m pip seems to have fixed it

    - name: Create Conda environment
      shell: bash -l {0}
      run: |
        conda install -c conda-forge python pip fenics-dolfinx=${{ matrix.dolfinx }} scifem adios4dolfinx

    - name: Install local package and dependencies
      shell: bash -l {0}
      run: |
        python -m pip install .[test]

[RemDelaporteMathurin]

Let's see tomorrow if #1142 fixed the nightly build