build: use --prod to not publish with ivy

Author: manudss

package.json

@@ -8,7 +8,7 @@
     "test": "ng test",
     "lint": "ng lint",
     "e2e": "ng e2e",
-    "build_lib": "ng build ngx-http-annotations && npm run copy-readme",
+    "build_lib": "ng build ngx-http-annotations --prod && npm run copy-readme",
     "copy-readme": "copyfiles ./README.md ./dist/ngx-http-annotations",
     "npm_pack": "cd dist/ngx-http-annotations && npm pack",
     "package": "npm run build_lib && npm run npm_pack",