Use --omit=dev instead of --production.

Author: mstssk

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
           node-version: ${{ matrix.node }}
           cache: "npm"
       - run: npm cit
-      - run: npm ci --production
+      - run: npm ci --omit=dev
       - run: npm it
         working-directory: ./example
   lint: