Prevent accidental dependency drift; address potential reason for app failure due to dependabot patch updates.

Author: swoocn

.github/workflows/build.yml

@@ -31,7 +31,7 @@ jobs:
 
         # Backend CI/CD Process
       - name: Install Dependencies for Backend
-        run: npm install
+        run: npm ci
 
       - name: Execute Tests for Backend
         run: npm run test -- --passWithNoTests