perf(ci): optimize npm install and fix deprecation warnings

- Add --prefer-offline --no-audit --no-fund flags to npm ci
- Fix semantic-release deprecation: use successCommentCondition instead of successComment

.github/workflows/nightly.yml

@@ -32,11 +32,11 @@ jobs:
           cache: "npm"
 
       - name: Install dependencies
-        run: npm ci
+        run: npm ci --prefer-offline --no-audit --no-fund
 
       - name: Install backend dependencies
         working-directory: ./backend
-        run: npm ci
+        run: npm ci --prefer-offline --no-audit --no-fund
 
       - name: Build
         run: npm run build