TST - install celer through pypi (#152)

Author: Badr-MOUFAD

.github/workflows/main.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install git+https://github.com/mathurinm/celer.git
+        pip install celer
         pip install pytest
         pip install numpydoc
         pip install .