moved Cache to before install of Rocoto because it had a duel purpose…

… of restoring caches that have been created

.github/workflows/ci-unit_tests.yaml

@@ -28,7 +28,7 @@ jobs:
           # If you have a requirements.txt file, you can install all dependencies using:
           # pip install -r requirements.txt
 
-      - name: Cache Rocoto
+      - name: Cache Rocoto Install
         uses: actions/cache@v4
         with:
           path: ~/rocoto