Update AWS Lambda runtime to nodejs18.x

[tampueroc]

AWS notified about Node.js v16 deprecation on AWS Lambda runtime. This PR upgrades AWS Lambda runtime to Node.js v18
Closes: #12310

[jmoe]

Waiting for this.

[fnerdrum]

Lambda upgraded from v2 to v3 of AWS SDK, so I think this is a bit more work. https://aws.amazon.com/blogs/compute/node-js-18-x-runtime-now-available-in-aws-lambda/

Also maybe go directly to nodejs20.x while we're at it?

[tschumann]

Looks like discussion about the AWS Javascript SDK v3 at #11920 is ongoing.

In relation to this, it looks like https://github.com/serverless/serverless/blob/main/lib/plugins/aws/custom-resources/resources/s3/handler.js is the file that gets deployed and run and I think https://github.com/serverless/serverless/blob/main/lib/plugins/aws/custom-resources/resources/utils.js is the only file that it references (indirectly at that) that uses the AWS Javascript SDK v2.

[tonivdv]

The correct fix is here => #12146

EDIT: I didn't notice this PR targets v2 ... but still more changes are required

[malcyL]

I inadvertently created a duplicate of this, which I have now closed: #12334

Testing of this change is working in our staging environments. We obviously need this before the node 16 runtime reaches it's end of life at AWS.

I notice someone else has just asked for this on the issue: #12310 (comment) - AWS are emailing reminding people that the node 16 eol is coming - so lots of people are looking at this I guess.

I'm not clear what else needs to be done here?

Edit: This is very similar to #12055 which bumped the version from 12 to 16.

[malcyL]

I'm also looking at the comment above re AWS Javascript SDK v3 and I'm wondering if that is relevant for the v2 branch this PR is targeting?

[tonivdv]

I'm also looking at the comment above re AWS Javascript SDK v3 and I'm wondering if that is relevant for the v2 branch this PR is targeting?

@malcyL afaik it is ... whether it is v2 or v3, if it runs on the node engine >=18 then it requires aws sdk v3

[marslan02]

Is there an estimated timeline for when this change will be available?

[reecebenson]

Requires AWS SDK v3, should refer to #12146

[tampueroc]

Updated AWS SDK v3 dependencies accordingly