ci: update SDK PR test workflow configuration

Author: abbesBenayache

.github/workflows/sdk-pr-test.yml

@@ -39,23 +39,18 @@ jobs:
           cache-dependency-path: package-lock.json
 
       - name: Install dependencies
-        working-directory: packages/sdk
         run: npm ci
 
       - name: Unit tests
-        working-directory: packages/sdk
         run: npm run test:unit
 
       - name: x
-        working-directory: packages/sdk
         run: npm run start-test-stack
 
       - name: Test e2e
-        working-directory: packages/sdk
         run: npm run test:e2e
 
       - name: Stop e2e test stack
-        working-directory: packages/sdk
         if: always()
         run: npm run stop-test-stack