Fix tests

.github/workflows/tests.yml

@@ -50,7 +50,7 @@ jobs:
           pip install -r requirements/bayes_opt.txt
           conda uninstall wheel
           pip install wheel==0.38.4
-          pip install "scipy<1.7.0" numpy==1.19.4 dadi==2.2.0
+          pip install numpy==1.19.4 "scipy<1.7.0" dadi==2.2.0
           
       - name: Install dadi and scikit-allel using conda.
         run: |