BUG: install test reqs first

Author: jklenzing

.github/workflows/pysat_rc.yml

@@ -27,13 +27,14 @@ jobs:
       run: brew reinstall gcc
 
     - name: Install pysat RC
-      run: pip install --no-deps -i https://test.pypi.org/simple/ pysat
+      run: |
+        pip install -r test_requirements.txt
+        pip install --no-deps -i https://test.pypi.org/simple/ pysat
 
     - name: Install standard dependencies
       run: |
         pip install -r requirements.txt
         pip install pysatCDF --no-binary=pysatCDF
-        pip install -r test_requirements.txt
 
     - name: Set up pysat
       run: |