updated workflow file

Author: naman-contentstack

.github/workflows/unit-test.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Install dependencies
         run: |
           npm install
-          npm install @contentstack/cli
+          npm install -g @contentstack/cli
 
       - name: Configure Region
         run: csdx config:set:region us