fix(aws-serverless): Include ESM artifacts in package (getsentry#11973)

Fix the `files` property in our AWS Serverless SDK `package.json` to include ESM artifacts now that we support ESM in AWS Serverless.

Author: Lms24

packages/aws-serverless/package.json

@@ -11,6 +11,7 @@
  },
  "files": [
  "cjs",
+ "esm",
  "types",
  "types-ts3.8",
  "import-hook.mjs",