fix serverless config

Author: lobsterkatie

packages/serverless/rollup.npm.config.js

@@ -1,3 +1,7 @@
 import { makeBaseNPMConfig, makeNPMConfigVariants } from '../../rollup/index.js';
 
-export default makeNPMConfigVariants(makeBaseNPMConfig());
+export default makeNPMConfigVariants(
+  makeBaseNPMConfig({
+    entrypoints: ['src/index.ts', 'src/awslambda-auto.ts'],
+  }),
+);