fix: Remove npm cache requirement from CI workflow

- Change npm ci to npm install (no lock file in repo)
- Remove cache: 'npm' from setup-node action
- Fixes CI failure: Dependencies lock file is not found

Author: michaeloboyle

.github/workflows/ci.yml

@@ -21,10 +21,9 @@ jobs:
       uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
-        cache: 'npm'
 
     - name: Install dependencies
-      run: npm ci
+      run: npm install
 
     - name: Run linter
       run: npm run lint --if-present