nodejs20.x - migrate sample from aws-sdk v2 to v3

[sannya-singal]

Motivation

The current transcription sample is not compatible with the latest node version.

Changes

This PR:

1. Adds support to the sample to run against node20.x
2. Migrates aws-sdk v2 to v3
3. The project now uses ESM module systems
4. Update the node version used in github workflows pipeline

[steffyP]

Great work, @sannya-singal 🙌 🚀 Nice to see the sample working with Nodejs 20 🎉

I only have two questions:

1. when running the action, there are still some warnings, e.g.

Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-python@v4. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

I think we should use actions/checkout@v4 and actions/setup-python@v5 .
Could you test this, and see if there are still warnings? 🙏

2. Not related to this PR, just something I stumbled across: There seem to be some changes in your private repo (where this one was forked from), that is not in the localstack-sample yet. Could you create a PR if the change is relevant?

[sannya-singal]

Thanks @steffyP for the review 🙌 🙇‍♀️

I have removed all the soon to be deprecated github actions in the repository and updated the ones giving warnings, also changed the serverless version to use 3.38.0 as there was a recent release yesterday which is causing some failures here: https://github.com/localstack-samples/sample-serverless-transcribe/actions/runs/9185966236.

Regarding the forked repo diff, its already included in here:

sample-serverless-transcribe/src/presign.js

Line 10 in 7f84c71

endpoint: 'https://s3.localhost.localstack.cloud:4566',